<Window x:Class="Elwig.Windows.TestWindow" 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:Elwig.Windows" xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit" Title="Test Fenster - Elwig" MinHeight="400" MinWidth="325" Height="450" Width="800" ResizeMode="CanResize"> <Grid> <xctk:CheckComboBox x:Name="MyComboBox" HorizontalAlignment="Left" Margin="216,186,0,0" VerticalAlignment="Top" Delimiter=", " SelectedValue="{Binding SelectedValue}" SelectedItemsOverride="{Binding SelectedItems}" ItemSelectionChanged="OnItemSelectionChanged"/> <TextBlock x:Name="MyText" HorizontalAlignment="Left" Margin="318,246,0,0" TextWrapping="Wrap" Text="TextBlock" VerticalAlignment="Top"/> <ListBox x:Name="MyListBox" HorizontalAlignment="Left" Margin="492,125,0,0" VerticalAlignment="Top"/> </Grid> </Window>