How to manually bind static Items to SplitButton (mahapps) via XAML

Question

How do i manually add for example 2 items (buttons) from which the first is preselected via xaml? Like:

<controls:SplitButton SelectedIndex="0">
    <controls:SplitButton.Items>
        <Button Content="Button 1"/>
        <Button Content="Button 2"/>
    </controls:SplitButton.Items>
</controls:SplitButton>

Documentation tells me to use ItemsSource Binding but there is no example of the code behind.

Answer 1

This is the XAML:

<controls:SplitButton x:Name="splitButton" 
        SelectedIndex="1" 
        HorizontalAlignment="Left" 
        VerticalAlignment="Top" 
        Grid.Column="1">
    <controls:SplitButton.ItemTemplate>
        <DataTemplate>
            <Grid>
                <TextBlock HorizontalAlignment="Left" 
                        TextWrapping="Wrap" 
                        Text="{Binding Text}" 
                        VerticalAlignment="Top"/>
            </Grid>
        </DataTemplate>
    </controls:SplitButton.ItemTemplate>
</controls:SplitButton>

This is the code behind:

class SplitButtonItem
{
    public string Text { get; set; }
}

public MainWindow()
{
    InitializeComponent();

    var button1 = new SplitButtonItem() { Text = "Item 01", };
    var button2 = new SplitButtonItem() { Text = "Item 02", };
    var buttonList = new List<SplitButtonItem>() 
    {
        button1, 
        button2,
    };
    splitButton.ItemsSource = buttonList;
}

This is how it look at runtime:

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