How to bind to UpdateSourceTrigger in WPF?

Question

I need to bind to the UpdateSourceTrigger property. I have a class with

public UpdateSourceTrigger trigger {get ; set;}

and XAML code in which I have a ComboBox with something like

Text="{Binding name, UpdateSourceTrigger ={Binding trigger}}".

How can I accomplish this without any exceptions.

Answer 1

You might need to use a trigger to change the entire binding.

<Style TargetType="ComboBox">
    <Setter Property="Text" Value="{Binding Name, UpdateSourceTrigger=Explicit}"/>
    <Style.Triggers>
        <DataTrigger Binding="{Binding trigger}" Value="LostFocus">
            <Setter Property="Text" Value="{Binding Name, UpdateSourceTrigger=LostFocus}"/>
        </DataTrigger>
        <DataTrigger Binding="{Binding trigger}" Value="PropertyChanged">
            <Setter Property="Text" Value="{Binding Name, UpdateSourceTrigger=PropertyChanged}"/>
        </DataTrigger>
    </Style.Triggers>
</Style>