如何创造← 在XAML中

<Window x:Class="WpfApp1.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:WpfApp1"
        xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
        xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
        xmlns:mah="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
        WindowTransitionsEnabled="False"
        mc:Ignorable="d"
        Title="MainWindow"
        Height="450"
        Width="800"
        WindowStartupLocation="CenterScreen"
        Loaded="Window_Loaded"
        Style="{StaticResource DefaultWindow}">

    <Window.DataContext>
        <local:MainWindowViewModel />
    </Window.DataContext>

    <Window.Resources>
        <local:StringToEnumConverter x:Key="StringToEnumConverter"/>
    </Window.Resources>

    <mah:MetroWindow.RightWindowCommands>
        <mah:WindowCommands>
            <Button x:Name="cmdMinimize"
                    Style="{StaticResource WindowMinimizeButton}" />
            <Button x:Name="cmdMaximize"
                    Style="{StaticResource WindowMaximizeButton}" />
            <Button x:Name="cmdExit"
                    Style="{StaticResource WindowExitButton}" />
        </mah:WindowCommands>
    </mah:MetroWindow.RightWindowCommands>

    <StackPanel x:Name="stackPanel"
                Orientation="Horizontal">
        <TextBlock x:Name="txtStatus"
                   Text="{Binding Status}"
                   FontSize="24"
                   FontFamily="Arial"
                   Margin="80,5,0,0"
                   TextWrapping="Wrap" />
        <StackPanel Orientation="Vertical">
            <Button x:Name="cmdTest"
                    Content="Test"
                    Margin="5"
                    FontSize="20"
                    FontFamily="Arial" />
            <Button x:Name="cmdStop"
                    Content="Stop"
                    Margin="5"
                    FontSize="20"
                    FontFamily="Arial" />
            <Button x:Name="cmdStart"
                    Content="Start"
                    Margin="5"
                    FontSize="20"
                    FontFamily="Arial" />
        </StackPanel>
    </StackPanel>
</Window>

public partial class MainWindow : Window

{

    public MainWindow()

    {

        InitializeComponent();

        DataContext = new MainWindowViewModel();

    }

    private void Window_Loaded(object sender, RoutedEventArgs e)

    {

        var converter = new StringToEnumConverter();

        var enumValues = Enum.GetValues(typeof(Status));

        var allStatus = enumValues.Cast<Status>().ToList();

        comboBoxStatus.ItemsSource = allStatus;

        comboBoxStatus.SelectedItem = Status.Idle;

    }

    private void cmdTest_Click(object sender, RoutedEventArgs e)

    {

        var viewModel = (MainWindowViewModel)DataContext;

        viewModel.Status = (Status)comboBoxStatus.SelectedItem