init

UI/Cocktailmaker/.editorconfig

+# Entfernen Sie die folgende Zeile, wenn Sie EDITORCONFIG-Einstellungen von höheren Verzeichnissen vererben möchten.
+root = true
+
+# C#-Dateien
+[*.cs]
+
+#### Wichtige EditorConfig-Optionen ####
+
+# Einzüge und Abstände
+indent_size = 4
+indent_style = space
+tab_width = 4
+
+# Einstellungen für neue Zeilen
+end_of_line = crlf
+insert_final_newline = false
+
+#### .NET-Codierungskonventionen ####
+
+# Using-Direktiven organisieren
+dotnet_separate_import_directive_groups = true
+dotnet_sort_system_directives_first = true
+file_header_template = unset
+
+# this.- und Me.-Einstellungen
+dotnet_style_qualification_for_event = false:silent
+dotnet_style_qualification_for_field = false:silent
+dotnet_style_qualification_for_method = false:silent
+dotnet_style_qualification_for_property = false:silent
+
+# Einstellungen für Sprachschlüsselwörter und BCL-Typen
+dotnet_style_predefined_type_for_locals_parameters_members = true:silent
+dotnet_style_predefined_type_for_member_access = false:silent
+
+# Einstellungen für Klammern
+dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity:silent
+dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:silent
+dotnet_style_parentheses_in_other_operators = never_if_unnecessary:silent
+dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:silent
+
+# Einstellungen für Modifizierer
+dotnet_style_require_accessibility_modifiers = for_non_interface_members:silent
+
+# Einstellungen für Ausdrucksebene
+dotnet_style_coalesce_expression = true:warning
+dotnet_style_collection_initializer = true:suggestion
+dotnet_style_explicit_tuple_names = true:suggestion
+dotnet_style_null_propagation = true:warning
+dotnet_style_object_initializer = true:suggestion
+dotnet_style_operator_placement_when_wrapping = beginning_of_line
+dotnet_style_prefer_auto_properties = true:silent
+dotnet_style_prefer_compound_assignment = true:suggestion
+dotnet_style_prefer_conditional_expression_over_assignment = true:silent
+dotnet_style_prefer_conditional_expression_over_return = true:silent
+dotnet_style_prefer_inferred_anonymous_type_member_names = false:suggestion
+dotnet_style_prefer_inferred_tuple_names = true:suggestion
+dotnet_style_prefer_is_null_check_over_reference_equality_method = true:warning
+dotnet_style_prefer_simplified_boolean_expressions = true:suggestion
+dotnet_style_prefer_simplified_interpolation = true:suggestion
+
+# Einstellungen für Felder
+dotnet_style_readonly_field = true:suggestion
+
+# Einstellungen für Parameter
+dotnet_code_quality_unused_parameters = all:suggestion
+
+# Unterdrückungseinstellungen
+dotnet_remove_unnecessary_suppression_exclusions = none
+
+#### C#-Codierungskonventionen ####
+
+# Var-Einstellungen
+csharp_style_var_elsewhere = true:silent
+csharp_style_var_for_built_in_types = true:silent
+csharp_style_var_when_type_is_apparent = true:silent
+
+# Ausdruckskörpermember
+csharp_style_expression_bodied_accessors = true:silent
+csharp_style_expression_bodied_constructors = false:silent
+csharp_style_expression_bodied_indexers = true:silent
+csharp_style_expression_bodied_lambdas = true:silent
+csharp_style_expression_bodied_local_functions = true:silent
+csharp_style_expression_bodied_methods = true:silent
+csharp_style_expression_bodied_operators = true:silent
+csharp_style_expression_bodied_properties = true:silent
+
+# Einstellungen für den Musterabgleich
+csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
+csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
+csharp_style_prefer_not_pattern = true:suggestion
+csharp_style_prefer_pattern_matching = true:silent
+csharp_style_prefer_switch_expression = false:suggestion
+
+# Einstellungen für NULL-Überprüfung
+csharp_style_conditional_delegate_call = true:warning
+
+# Einstellungen für Modifizierer
+csharp_prefer_static_local_function = true:suggestion
+csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async:silent
+
+# Einstellungen für Codeblöcke
+csharp_prefer_braces = when_multiline:silent
+csharp_prefer_simple_using_statement = false:suggestion
+
+# Einstellungen für Ausdrucksebene
+csharp_prefer_simple_default_expression = true:suggestion
+csharp_style_deconstructed_variable_declaration = true:suggestion
+csharp_style_inlined_variable_declaration = true:suggestion
+csharp_style_pattern_local_over_anonymous_function = true:suggestion
+csharp_style_prefer_index_operator = true:suggestion
+csharp_style_prefer_range_operator = false:suggestion
+csharp_style_throw_expression = true:suggestion
+csharp_style_unused_value_assignment_preference = discard_variable:suggestion
+csharp_style_unused_value_expression_statement_preference = discard_variable:silent
+
+# Einstellungen für using-Anweisungen
+csharp_using_directive_placement = outside_namespace:silent
+
+#### C#-Formatierungsregeln ####
+
+# Einstellungen für neue Zeilen
+csharp_new_line_before_catch = true
+csharp_new_line_before_else = true
+csharp_new_line_before_finally = true
+csharp_new_line_before_members_in_anonymous_types = true
+csharp_new_line_before_members_in_object_initializers = true
+csharp_new_line_before_open_brace = all
+csharp_new_line_between_query_expression_clauses = true
+
+# Einstellungen für Einrückung
+csharp_indent_block_contents = true
+csharp_indent_braces = false
+csharp_indent_case_contents = true
+csharp_indent_case_contents_when_block = false
+csharp_indent_labels = one_less_than_current
+csharp_indent_switch_labels = true
+
+# Einstellungen für Abstände
+csharp_space_after_cast = false
+csharp_space_after_colon_in_inheritance_clause = true
+csharp_space_after_comma = true
+csharp_space_after_dot = false
+csharp_space_after_keywords_in_control_flow_statements = true
+csharp_space_after_semicolon_in_for_statement = true
+csharp_space_around_binary_operators = before_and_after
+csharp_space_around_declaration_statements = false
+csharp_space_before_colon_in_inheritance_clause = true
+csharp_space_before_comma = false
+csharp_space_before_dot = false
+csharp_space_before_open_square_brackets = false
+csharp_space_before_semicolon_in_for_statement = false
+csharp_space_between_empty_square_brackets = false
+csharp_space_between_method_call_empty_parameter_list_parentheses = false
+csharp_space_between_method_call_name_and_opening_parenthesis = false
+csharp_space_between_method_call_parameter_list_parentheses = false
+csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
+csharp_space_between_method_declaration_name_and_open_parenthesis = false
+csharp_space_between_method_declaration_parameter_list_parentheses = false
+csharp_space_between_parentheses = false
+csharp_space_between_square_brackets = false
+
+# Umbrucheinstellungen
+csharp_preserve_single_line_blocks = true
+csharp_preserve_single_line_statements = false
+
+#### Benennungsstile ####
+
+# Benennungsregeln
+
+dotnet_naming_rule.interface_should_be_begins_with_i.severity = suggestion
+dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface
+dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i
+
+dotnet_naming_rule.types_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.types_should_be_pascal_case.symbols = types
+dotnet_naming_rule.types_should_be_pascal_case.style = pascal_case
+
+dotnet_naming_rule.non_field_members_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.non_field_members_should_be_pascal_case.symbols = non_field_members
+dotnet_naming_rule.non_field_members_should_be_pascal_case.style = pascal_case
+
+dotnet_naming_rule.enum_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.enum_should_be_pascal_case.symbols = enum
+dotnet_naming_rule.enum_should_be_pascal_case.style = pascal_case
+
+dotnet_naming_rule.class_should_be_pascal_case.severity = suggestion
+dotnet_naming_rule.class_should_be_pascal_case.symbols = class
+dotnet_naming_rule.class_should_be_pascal_case.style = pascal_case
+
+# Symbolspezifikationen
+
+dotnet_naming_symbols.class.applicable_kinds = class
+dotnet_naming_symbols.class.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.class.required_modifiers = 
+
+dotnet_naming_symbols.interface.applicable_kinds = interface
+dotnet_naming_symbols.interface.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.interface.required_modifiers = 
+
+dotnet_naming_symbols.enum.applicable_kinds = enum
+dotnet_naming_symbols.enum.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.enum.required_modifiers = 
+
+dotnet_naming_symbols.types.applicable_kinds = class, struct, interface, enum
+dotnet_naming_symbols.types.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.types.required_modifiers = 
+
+dotnet_naming_symbols.non_field_members.applicable_kinds = property, event, method
+dotnet_naming_symbols.non_field_members.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.non_field_members.required_modifiers = 
+
+# Benennungsstile
+
+dotnet_naming_style.pascal_case.required_prefix = 
+dotnet_naming_style.pascal_case.required_suffix = 
+dotnet_naming_style.pascal_case.word_separator = 
+dotnet_naming_style.pascal_case.capitalization = pascal_case
+
+dotnet_naming_style.begins_with_i.required_prefix = I
+dotnet_naming_style.begins_with_i.required_suffix = 
+dotnet_naming_style.begins_with_i.word_separator = 
+dotnet_naming_style.begins_with_i.capitalization = pascal_case

UI/Cocktailmaker/App.config

+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8" />
+    </startup>
+</configuration>
\ No newline at end of file

UI/Cocktailmaker/App.xaml

+<Application x:Class="Cocktailmaker.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:Cocktailmaker"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

UI/Cocktailmaker/App.xaml.cs

+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace Cocktailmaker
+{
+    /// <summary>
+    /// Interaktionslogik für "App.xaml"
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

UI/Cocktailmaker/Cocktail.cs

+
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace Cocktailmaker
+{
+    internal class Cocktail : INotifyPropertyChanged
+    {
+        private int number;
+
+        public int Number
+        {
+            get => number;
+            set
+            {
+                number = value;
+                RaisePropertyChange();
+            }
+        }
+
+        private string text;
+
+        public string Text
+        {
+            get => text;
+            set
+            {
+                text = value;
+                RaisePropertyChange();
+            }
+        }
+        internal void RaisePropertyChange([CallerMemberName] string property = "") => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+    }
+}

UI/Cocktailmaker/Cocktailmaker.csproj

+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{FA188F5C-B51D-428A-804C-B6C28FA93718}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <RootNamespace>Cocktailmaker</RootNamespace>
+    <AssemblyName>Cocktailmaker</AssemblyName>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Compile Include="Cocktail.cs" />
+    <Compile Include="SerialComWrapper.cs" />
+    <Compile Include="UI\Helper\UIErrorManager.cs" />
+    <Compile Include="UI\ViewModels\MainWindowViewModel.cs" />
+    <Compile Include="UI\Helper\ViewModel.cs" />
+    <Page Include="MainWindow.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="MainWindow.xaml.cs">
+      <DependentUpon>MainWindow.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>
\ No newline at end of file

UI/Cocktailmaker/Cocktailmaker.sln

+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31702.278
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Cocktailmaker", "Cocktailmaker.csproj", "{FA188F5C-B51D-428A-804C-B6C28FA93718}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{BA50ACA6-8033-4412-9BE0-751F081DDE73}"
+	ProjectSection(SolutionItems) = preProject
+		.editorconfig = .editorconfig
+	EndProjectSection
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{FA188F5C-B51D-428A-804C-B6C28FA93718}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FA188F5C-B51D-428A-804C-B6C28FA93718}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FA188F5C-B51D-428A-804C-B6C28FA93718}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FA188F5C-B51D-428A-804C-B6C28FA93718}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {CA0CC057-5797-459E-B253-B9091C234449}
+	EndGlobalSection
+EndGlobal

UI/Cocktailmaker/MainWindow.xaml

+<Window x:Class="Cocktailmaker.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:Cocktailmaker"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition/>
+            <RowDefinition/>
+            <RowDefinition Height="20"/>
+        </Grid.RowDefinitions>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition/>
+            <ColumnDefinition/>
+        </Grid.ColumnDefinitions>
+        <Button x:Name="But_StatTask" Grid.Row="0" Grid.ColumnSpan="2" Content="Start Task" Click="But_StatTask_Click"/>
+        <TextBox x:Name="Tb_Result" Grid.Row="1" Grid.Column="0" Text="{Binding Result}" />
+        <DataGrid x:Name="dataGrid" Grid.Row="1" Grid.Column="1" ItemsSource="{Binding Liste, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" AutoGenerateColumns="False" CanUserAddRows="False" CanUserDeleteRows="True" CanUserReorderColumns="True" CanUserResizeColumns="True" CanUserResizeRows="True" CanUserSortColumns="True" RowBackground="White" AlternatingRowBackground="GhostWhite">
+            <DataGrid.Columns>
+                <DataGridTextColumn Header="Number" Binding="{Binding Number}" Width="SizeToHeader" IsReadOnly="True"/>
+                <DataGridTextColumn Header="Text" Binding="{Binding Text}" Width="*" IsReadOnly="True"/>
+            </DataGrid.Columns>
+        </DataGrid>
+        <ProgressBar x:Name="progressDecoding" Grid.Row="2" Grid.ColumnSpan="2" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch"  Minimum="{Binding ProgressMin, Mode=OneWay, UpdateSourceTrigger=PropertyChanged }" Maximum="{Binding ProgressMax, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}" Value="{Binding ProgressValue, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}"/>
+
+    </Grid>
+</Window>

UI/Cocktailmaker/MainWindow.xaml.cs

+using System;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows;
+
+using Cocktailmaker.UI.ViewModels;
+
+namespace Cocktailmaker
+{
+    /// <summary>
+    /// Interaktionslogik für MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        private readonly MainWindowViewModel vm = new MainWindowViewModel();
+        public MainWindow()
+        {
+            InitializeComponent();
+            Tb_Result.DataContext = vm;
+            dataGrid.DataContext = vm;
+            progressDecoding.DataContext = vm;
+        }
+
+        private async void But_StatTask_Click(object sender, RoutedEventArgs e)
+        {
+            var steps = 30;
+            vm.Result = "start";
+            vm.ProgressValue = 0;
+            vm.ProgressMax = 100;
+            vm.ProgressMin = 0;
+            var progress = new Action<float>((p) =>
+            {
+                Dispatcher.Invoke(() =>
+                {
+                    vm.ProgressValue = (int)p;
+                });
+            });
+            //var longtask = await LongRunnerBool(steps, progress);
+            //vm.Result = longtask ? "done" : "failed";
+            var progressListe = new Action<float, Cocktail>((p, r) =>
+           {
+               Dispatcher.Invoke(() =>
+               {
+                   vm.ProgressValue = (int)p;
+                   vm.Liste.Add(r);
+               });
+           });
+            vm.Liste.Clear();
+            var longtaskListe = await LongRunnerListe(steps, progressListe);
+            foreach (var r in longtaskListe)
+            {
+                vm.Liste.Add(r);
+            }
+        }
+
+        private Task<bool> LongRunnerBool(int steps, Action<float> progress) => Task.Run(() => LongRunnerBoolFunc(steps, progress));
+        private bool LongRunnerBoolFunc(int steps, Action<float> progress)
+        {
+
+            for (var i = 1; i <= steps; i++)
+            {
+                Thread.Sleep(1 * 1000);
+                progress(100f / (float)steps * (float)i);
+
+            }
+            return true;
+        }
+        private Task<List<Cocktail>> LongRunnerListe(int steps, Action<float, Cocktail> progress) => Task.Run(() => LongRunnerListeFunc(steps, progress));
+
+        private List<Cocktail> LongRunnerListeFunc(int steps, Action<float, Cocktail> progress)
+        {
+            var liste = new List<Cocktail>();
+            for (var i = 1; i <= steps; i++)
+            {
+                var r = new Cocktail() { Number = i, Text = $"Cocktail {i} loaded" };
+                liste.Add(r);
+                Thread.Sleep(1 * 1);
+                progress(100f / (float)steps * (float)i, r);
+            }
+            return liste;
+        }
+    }
+
+}

UI/Cocktailmaker/Properties/AssemblyInfo.cs

+using System.Reflection;
+using System.Resources;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Windows;
+
+// Allgemeine Informationen über eine Assembly werden über die folgenden
+// Attribute gesteuert. Ändern Sie diese Attributwerte, um die Informationen zu ändern,
+// die einer Assembly zugeordnet sind.
+[assembly: AssemblyTitle("Cocktailmaker")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("HP Inc.")]
+[assembly: AssemblyProduct("Cocktailmaker")]
+[assembly: AssemblyCopyright("Copyright © HP Inc. 2021")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Durch Festlegen von ComVisible auf FALSE werden die Typen in dieser Assembly
+// für COM-Komponenten unsichtbar.  Wenn Sie auf einen Typ in dieser Assembly von
+// COM aus zugreifen müssen, sollten Sie das ComVisible-Attribut für diesen Typ auf "True" festlegen.
+[assembly: ComVisible(false)]
+
+//Um mit dem Erstellen lokalisierbarer Anwendungen zu beginnen, legen Sie
+//<UICulture>ImCodeVerwendeteKultur</UICulture> in der .csproj-Datei
+//in einer <PropertyGroup> fest.  Wenn Sie in den Quelldateien beispielsweise Deutsch
+//(Deutschland) verwenden, legen Sie <UICulture> auf \"de-DE\" fest.  Heben Sie dann die Auskommentierung
+//des nachstehenden NeutralResourceLanguage-Attributs auf.  Aktualisieren Sie "en-US" in der nachstehenden Zeile,
+//sodass es mit der UICulture-Einstellung in der Projektdatei übereinstimmt.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //Speicherort der designspezifischen Ressourcenwörterbücher
+                                     //(wird verwendet, wenn eine Ressource auf der Seite nicht gefunden wird,
+                                     // oder in den Anwendungsressourcen-Wörterbüchern nicht gefunden werden kann.)
+    ResourceDictionaryLocation.SourceAssembly //Speicherort des generischen Ressourcenwörterbuchs
+                                              //(wird verwendet, wenn eine Ressource auf der Seite nicht gefunden wird,
+                                              // designspezifischen Ressourcenwörterbuch nicht gefunden werden kann.)
+)]
+
+
+// Versionsinformationen für eine Assembly bestehen aus den folgenden vier Werten:
+//
+//      Hauptversion
+//      Nebenversion
+//      Buildnummer
+//      Revision
+//
+// Sie können alle Werte angeben oder Standardwerte für die Build- und Revisionsnummern verwenden,
+// indem Sie "*" wie unten gezeigt eingeben:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

UI/Cocktailmaker/Properties/Resources.Designer.cs

+//------------------------------------------------------------------------------
+// <auto-generated>
+//     Dieser Code wurde von einem Tool generiert.
+//     Laufzeitversion: 4.0.30319.42000
+//
+//     Änderungen an dieser Datei können fehlerhaftes Verhalten verursachen und gehen verloren, wenn
+//     der Code erneut generiert wird.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+
+namespace Cocktailmaker.Properties
+{
+    /// <summary>
+    ///   Eine stark typisierte Ressourcenklasse zum Suchen von lokalisierten Zeichenfolgen usw.
+    /// </summary>
+    // Diese Klasse wurde von der StronglyTypedResourceBuilder-Klasse
+    // über ein Tool wie ResGen oder Visual Studio automatisch generiert.
+    // Um einen Member hinzuzufügen oder zu entfernen, bearbeiten Sie die .ResX-Datei und führen dann ResGen
+    // mit der Option /str erneut aus, oder erstellen Sie Ihr VS-Projekt neu.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources
+    {
+
+        private static global::System.Resources.ResourceManager resourceMan;
+
+        private static global::System.Globalization.CultureInfo resourceCulture;
+
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources()
+        {
+        }
+
+        /// <summary>
+        ///   Gibt die zwischengespeicherte ResourceManager-Instanz zurück, die von dieser Klasse verwendet wird.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager
+        {
+            get
+            {
+                if ((resourceMan == null))
+                {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Cocktailmaker.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+
+        /// <summary>
+        ///   Überschreibt die CurrentUICulture-Eigenschaft des aktuellen Threads für alle
+        ///   Ressourcenlookups, die diese stark typisierte Ressourcenklasse verwenden.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture
+        {
+            get
+            {
+                return resourceCulture;
+            }
+            set
+            {
+                resourceCulture = value;
+            }
+        }
+    }
+}

UI/Cocktailmaker/Properties/Resources.resx

+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
\ No newline at end of file

UI/Cocktailmaker/Properties/Settings.Designer.cs

+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+
+namespace Cocktailmaker.Properties
+{
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase
+    {
+
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+
+        public static Settings Default
+        {
+            get
+            {
+                return defaultInstance;
+            }
+        }
+    }
+}

UI/Cocktailmaker/Properties/Settings.settings

+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
+  <Profiles>
+    <Profile Name="(Default)" />
+  </Profiles>
+  <Settings />
+</SettingsFile>
\ No newline at end of file

UI/Cocktailmaker/SerialComWrapper.cs

+using System;
+using System.IO.Ports;
+
+namespace Cocktailmaker
+{ /// <summary>
+  /// Event is called when the serial com receives data.
+  /// </summary>
+  /// <param name="sender"></param>
+  /// <param name="e">argument containting the data</param>
+    public delegate void SerialComWrapperOnReceiveEventHandler(object sender, SerialComWrapperOnReceiveEventArgs e);
+
+    /// <summary>
+    /// Event argument for SerialComOnReceiveEventHandler containing the data.
+    /// </summary>
+    public class SerialComWrapperOnReceiveEventArgs : EventArgs
+    {
+        /// <summary>
+        /// Data that is received.
+        /// </summary>
+        public byte[] Data { get; set; }
+    }
+
+    /// <summary>
+    /// Connection status of the serial com.
+    /// </summary>
+    public enum SerialComWrapperConnectionStatus
+    {
+        /// <summary>
+        /// Serial com is connected.
+        /// </summary>
+        Connected,
+        /// <summary>
+        /// Serial com is diconnected.
+        /// </summary>
+        Disconnected,
+        /// <summary>
+        /// Serial com connection status is unknown.
+        /// </summary>
+        Unknown,
+        /// <summary>
+        /// Serial com connection status has an error.
+        /// </summary>
+        Error
+    }
+
+    /// <summary>
+    /// Event is called when the connection status of the serial com changes.
+    /// </summary>
+    /// <param name="sender"></param>
+    /// <param name="e">argument containing the new connection status</param>
+    public delegate void SerialComWrapperOnConnectionStatusChangedEventHandler(object sender, SerialComWrapperConnectionStatusChangedEventArgs e);
+
+    /// <summary>
+    /// Event argument for SerialComOnConnectionStatusChangedEventHandler containing the new status.
+    /// </summary>
+    public class SerialComWrapperConnectionStatusChangedEventArgs : EventArgs
+    {
+        /// <summary>
+        /// New status of the serial com connection.
+        /// </summary>
+        public SerialComWrapperConnectionStatus State { get; set; }
+
+        /// <summary>
+        /// Optional text showing more information.
+        /// </summary>
+        public string Text { get; set; }
+    }
+
+    internal class SerialComWrapper
+    {
+
+
+        /// <summary>
+        /// Event is called when the serial com receives data.
+        /// </summary>
+        private event SerialComWrapperOnReceiveEventHandler OnReceive;
+
+        /// <summary>
+        /// Event is called when the connection status of the physical layer changes.
+        /// </summary>
+        private event SerialComWrapperOnConnectionStatusChangedEventHandler OnConnectionStatusChanged;
+        /// <summary>
+        /// COM Port of the serial communication.
+        /// </summary>
+        /// <exception cref="InvalidOperationException">Thrown if the caller tries to set the property and the wrapped SerialPort instance is already connected</exception>
+        public string ComPort
+        {
+            get => comPort;
+            set
+            {
+                if (comPort == value)
+                    return;
+                if (IsConnected)
+                    throw new InvalidOperationException($"Serial port already connected to {serialPort?.PortName}");
+                comPort = value;
+                ReconfigureSerialPort();
+            }
+        }
+
+        /// <summary>
+        /// Baudrate, i.e. number of transmitted symbols per second. Default: 115200.
+        /// </summary>
+        /// <exception cref="InvalidOperationException">Thrown if the caller tries to set the property and the wrapped SerialPort instance is already connected</exception>
+        public int BaudRate
+        {
+            get => baudRate;
+            set
+            {
+                if (baudRate == value)
+                    return;
+                if (IsConnected)
+                    throw new InvalidOperationException("Can\'t change baud rate, serial port is open");
+                baudRate = value;
+                ReconfigureSerialPort();
+            }
+        }
+
+        /// <summary>
+        /// Parity of the serial communication. Default: None.
+        /// </summary>
+        /// <exception cref="InvalidOperationException">Thrown if the caller tries to set the property and the wrapped SerialPort instance is already connected</exception>
+        public Parity Parity
+        {
+            get => parity;
+            set
+            {
+                if (parity == value)
+                    return;
+                if (IsConnected)
+                    throw new InvalidOperationException("Can\'t change parity, serial port is open");
+                parity = value;
+                ReconfigureSerialPort();
+            }
+        }
+
+        /// <summary>
+        /// Number of stop bits for the serial port. Default: One.
+        /// </summary>
+        /// <exception cref="InvalidOperationException">Thrown if the caller tries to set the property and the wrapped SerialPort instance is already connected</exception>
+        public StopBits StopBits
+        {
+            get => stopBits;
+            set
+            {
+                if (stopBits == value)
+                    return;
+                if (IsConnected)
+                    throw new InvalidOperationException("Can\'t change stop bits, serial port is open");
+                stopBits = value;
+                ReconfigureSerialPort();
+            }
+        }
+
+        /// <summary>
+        /// Indicates whether the physical layer is connected or not.
+        /// </summary>
+        public bool IsConnected => serialPort?.IsOpen ?? false;
+
+
+        private SerialPort serialPort;
+
+
+        private SerialComWrapperConnectionStatus curConStatus = SerialComWrapperConnectionStatus.Unknown;
+        private readonly System.Timers.Timer conTimer = new System.Timers.Timer(100);
+
+        private string comPort;
+        private int baudRate;
+        private Parity parity;
+        private StopBits stopBits;
+
+        /// <summary>
+        /// Initialize a new instance of the SerialCom class.
+        /// </summary>
+        /// <param name="comPort">Name of the serial port to use</param>
+        /// <param name="baudRate">Baudrate to use</param>
+        /// <param name="parity">Parity to use</param>
+        /// <param name="stopBits">Stop bits to use</param>
+        public SerialComWrapper(string comPort, int baudRate = 115200, Parity parity = Parity.None, StopBits stopBits = StopBits.One)
+        {
+            ComPort = comPort;
+
+            BaudRate = baudRate;
+            Parity = parity;
+            StopBits = stopBits;
+
+            InitializeSerialPort();
+        }
+
+        private void NotifyConnectionStateChanged(SerialComWrapperConnectionStatus newConStatus, string errorText = "")
+        {
+            if (curConStatus == newConStatus)
+                return;
+
+            conTimer?.Start();  //Ein Aufrufder- Start Methode, wenn der Timer aktiviert ist, hat keine Auswirkungen.
+
+            var args = new SerialComWrapperConnectionStatusChangedEventArgs() { State = newConStatus, Text = errorText };
+            curConStatus = newConStatus;
+            OnConnectionStatusChanged?.Invoke(this, args);
+        }
+
+        /// <summary>
+        /// Opens the serial port. If opened, it should be closed when the application closes!
+        /// </summary>
+        /// <param name="comPort">ComPort of the serial port. If comPort=="", SerialCom.ComPort variable will be used</param>
+        public void Open(string comPort = "")
+        {
+            try
+            {
+                ComPort = comPort == "" ? ComPort : comPort;
+
+                if (serialPort == null)
+                    InitializeSerialPort(); // Re-Initialise the port.
+
+                if (!serialPort.IsOpen)
+                {
+                    serialPort.PortName = ComPort;
+                    serialPort?.Open();
+                    serialPort?.DiscardInBuffer();
+                    serialPort?.DiscardOutBuffer();
+
+                    Console.WriteLine("Open COM Port " + ComPort);
+
+                    NotifyConnectionStateChanged(SerialComWrapperConnectionStatus.Connected);
+                }
+                else
+                {
+                    Console.WriteLine($"COM Port {ComPort} is already opened");
+                }
+            }
+            catch (Exception e)
+            {
+                Error($"Failed to open the COM port (name: {ComPort}). Msg = {e.Message}", e);
+            }
+        }
+
+        /// <summary>
+        /// Closes the serial port.
+        /// </summary>
+        public void Close()
+        {
+            try
+            {
+                if (serialPort?.IsOpen ?? false)
+                {
+                    serialPort?.DiscardInBuffer();
+                    serialPort?.DiscardOutBuffer();
+                    serialPort?.Close();
+                    Console.WriteLine("Close COM Port " + ComPort);
+
+                    NotifyConnectionStateChanged(SerialComWrapperConnectionStatus.Disconnected);
+                }
+                else
+                {
+                    Console.WriteLine($"Close Port: { ComPort } is already closed");
+                }
+
+                DeinitSerialPort();
+            }
+            catch (Exception e)
+            {
+                Error("Failed to close the COM port. Msg = " + e.Message, e);
+            }
+        }
+
+        private void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
+        {
+            var bytesCount = serialPort?.BytesToRead ?? 0;
+            var readBytes = new byte[bytesCount];
+            if (serialPort?.Read(readBytes, 0, bytesCount) != bytesCount)
+            {
+                // Error while reading the Serial Port
+                Error("Could not read all bytes that are in the buffer");
+            }
+            // Console.WriteLine(tag, $"RAW-RECV: {BitConverter.ToString(readBytes)}");
+            var args = new SerialComWrapperOnReceiveEventArgs() { Data = readBytes };
+            OnReceive?.Invoke(this, args);
+        }
+
+
+        /// <summary>
+        /// Transmits data on the serial port.
+        /// </summary>
+        /// <param name="data">data to be sent</param>
+        public void Send(byte[] data)
+        {
+            if (serialPort == null || !IsConnected)
+            {
+                Console.WriteLine("COM port not open, no data sent");
+                return;
+            }
+
+            //Console.WriteLine($"RAW-SEND: {BitConverter.ToString(data)}");
+            try
+            {
+                serialPort?.Write(data, 0, data.Length);
+            }
+            catch (Exception e)
+            {
+                Error("Send failed. Msg = " + e.ToString(), e);
+            }
+        }
+
+        /// <summary>
+        /// Error handling:
+        /// - log <paramref name="text"/> and optional <paramref name="e"/>
+        /// - raise OnConnectionStatusChanged event and
+        /// - close the serial port
+        /// </summary>
+        /// <param name="text">Error message</param>
+        /// <param name="e">Optional exception</param>
+        private void Error(string text, Exception e = null)
+        {
+            if (e == null)
+                Console.WriteLine(text);
+            else
+                Console.WriteLine(text + e.Message);
+
+            NotifyConnectionStateChanged(SerialComWrapperConnectionStatus.Error, text);
+
+            // Close the Port since we had an Error!
+            Close();
+        }
+
+        /// <summary>
+        /// First initialization of the wrapped SerialPort instance.
+        /// </summary>
+        private void InitializeSerialPort()
+        {
+            serialPort = new SerialPort()
+            {
+                PortName = ComPort,
+                BaudRate = BaudRate,
+                Parity = Parity,
+                DataBits = 8,
+                StopBits = StopBits,
+                ReadTimeout = 5000,
+                WriteTimeout = 5000,
+                RtsEnable = false,
+                DtrEnable = false
+            };
+
+            serialPort.DataReceived += SerialPort_DataReceived;
+
+            // Periodic update of the connection status
+            conTimer.Elapsed += ConTimer_Elapsed;
+
+        }
+
+        private void ConTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
+        {
+            var newConStatus = IsConnected ? SerialComWrapperConnectionStatus.Connected : SerialComWrapperConnectionStatus.Disconnected;
+
+            // Raise OnConnectionStatusChanged event if we have a new status
+            if (newConStatus != curConStatus)
+            {
+                Console.WriteLine($"connection status has changed to {newConStatus}. Old Status: {curConStatus}");
+
+                Console.WriteLine($"IsConnected: {IsConnected}, serialPort == null : {serialPort == null}");
+
+                NotifyConnectionStateChanged(newConStatus);
+            }
+        }
+
+        private void DeinitSerialPort()
+        {
+            conTimer.Elapsed -= ConTimer_Elapsed;
+            conTimer.Stop();
+
+            serialPort?.Dispose();
+            serialPort = null;
+        }
+
+        /// <summary>
+        /// Reconfigure the wrapped SerialPort instance.
+        /// </summary>
+        /// <exception cref="InvalidOperationException">Thrown if the wrapped SerialPort instance is connected</exception>
+        private void ReconfigureSerialPort()
+        {
+            // This happens while the constructor initializes the properties with the default values
+            if (serialPort == null)
+                return;
+
+            if (IsConnected)
+                throw new InvalidOperationException("Serial port is open, reconfiguration not possible");
+
+            // The timer and the assigned callback shouldn't cause problems but clean them up anyway
+            conTimer.Stop();
+            serialPort.DataReceived -= SerialPort_DataReceived;
+
+            // Create new SerialPort instance using the current configuration
+            serialPort = new SerialPort()
+            {
+                PortName = ComPort,
+                BaudRate = BaudRate,
+                Parity = Parity,
+                DataBits = 8,
+                StopBits = StopBits,
+                ReadTimeout = 5000,
+                WriteTimeout = 5000,
+                RtsEnable = false,
+                DtrEnable = false
+            };
+
+            serialPort.DataReceived += SerialPort_DataReceived;
+
+            conTimer.Start();
+        }
+    }
+}

UI/Cocktailmaker/UI/Helper/UIErrorManager.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Cocktailmaker.UI.Helper
+{
+    public class UIErrorManager
+    {
+        public class UIPropertyError
+        {
+            public string Name { get; set; }
+            public bool HasError { get; set; } = false;
+
+            public string ErrorInfoText { get; set; } = "";
+        }
+
+        public event PropertyErrorHandler OnPropertyErrorHandler;
+
+        private readonly List<UIPropertyError> propertyErrors = new List<UIPropertyError>();
+
+        public void Register(string propertyName)
+        {
+            if (IsRegistered(propertyName))
+                throw new SystemException($"Property {propertyName} is already registered.");
+
+            propertyErrors.Add(new UIPropertyError() { Name = propertyName });
+        }
+
+        public bool IsRegistered(string propertyName) => propertyErrors.Where(x => x.Name == propertyName).Any();
+
+
+        public void SetError(string propertyName, string errInfoText)
+        {
+            if (!IsRegistered(propertyName))
+                throw new SystemException($"Property {propertyName} is not registered.");
+
+            var pe = propertyErrors.Where(x => x.Name == propertyName).ToList()[0];
+            pe.ErrorInfoText = errInfoText;
+            pe.HasError = true;
+
+            OnPropertyErrorHandler?.Invoke(this, new PropertyErrorEventArgs() { Name = pe.Name });
+        }
+
+
+
+        public bool HasError(string propertyName)
+        {
+            if (!IsRegistered(propertyName))
+                throw new SystemException($"Property {propertyName} is not registered.");
+
+            var pe = propertyErrors.Where(x => x.Name == propertyName).ToList()[0];
+
+            return pe.HasError;
+        }
+
+        public string GetErrorInfoText(string propertyName)
+        {
+            if (!IsRegistered(propertyName))
+                throw new SystemException($"Property {propertyName} is not registered.");
+
+            var pe = propertyErrors.Where(x => x.Name == propertyName).ToList()[0];
+
+            // We reset the error flag since the error info text has been retrieved!
+            pe.HasError = false;
+
+            return pe.ErrorInfoText;
+        }
+
+    }
+
+    public delegate void PropertyErrorHandler(object sender, PropertyErrorEventArgs args);
+
+    public class PropertyErrorEventArgs : EventArgs
+    {
+        public string Name { get; set; }
+    }
+}

UI/Cocktailmaker/UI/Helper/ViewModel.cs

+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace Cocktailmaker.UI.Helper
+{
+    public abstract class ViewModel : INotifyPropertyChanged, IDataErrorInfo
+    {
+        internal void RaisePropertyChange([CallerMemberName] string property = "") => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
+
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+
+
+        #region UI Error Interface
+        public UIErrorManager ErrorManager = new UIErrorManager();
+
+        public string Error => "";
+
+        public string this[string propertyName]
+        {
+            get
+            {
+                var retStr = "";
+
+                // Check if property is registered.
+                if (ErrorManager.IsRegistered(propertyName) && ErrorManager.HasError(propertyName))
+                    return ErrorManager.GetErrorInfoText(propertyName);
+
+                return retStr;
+            }
+        }
+
+        #endregion
+    }
+}

UI/Cocktailmaker/UI/ViewModels/MainWindowViewModel.cs

+
+using System.Collections.ObjectModel;
+
+using Cocktailmaker.UI.Helper;
+
+namespace Cocktailmaker.UI.ViewModels
+{
+    internal class MainWindowViewModel : ViewModel
+    {
+        public MainWindowViewModel()
+        {
+            ErrorManager.Register(nameof(Result));
+            ErrorManager.Register(nameof(ProgressMin));
+            ErrorManager.Register(nameof(ProgressValue));
+            ErrorManager.Register(nameof(ProgressMax));
+
+            // Every time the property manager sets an error, we raise the "PropertyChange" event so that the UI can display the error!
+            ErrorManager.OnPropertyErrorHandler += (s, args) => RaisePropertyChange(args.Name);
+        }
+
+        private string result;
+
+        public string Result
+        {
+            get => result;
+            set
+            {
+                result = value;
+                RaisePropertyChange();
+
+            }
+        }
+        private int progressMin = 0;
+
+        public int ProgressMin
+        {
+            get => progressMin;
+            set
+            {
+                progressMin = value;
+                RaisePropertyChange();
+            }
+        }
+
+        private int progressValue = 0;
+
+        public int ProgressValue
+        {
+            get => progressValue;
+            set
+            {
+                progressValue = value;
+                RaisePropertyChange();
+            }
+        }
+
+        private int progressMax = 100;
+
+        public int ProgressMax
+        {
+            get => progressMax;
+            set
+            {
+                progressMax = value;
+                RaisePropertyChange();
+            }
+        }
+
+
+        public ObservableCollection<Cocktail> Liste { get; set; } = new ObservableCollection<Cocktail>();
+    }
+}
\ No newline at end of file