Programmatically retrieving MultiBindingExpression from control

Question

How to retrieve (using code-behind) binding expression from control bounded with using MultiBinding?

Answer 1

Using BindingOperations.GetMultiBindingExpression method.

Example:

        <TextBlock x:Name="MyTextBlock">
            <TextBlock.Text>
                <MultiBinding Converter="{StaticResource myConverter}">
                    <Binding ElementName="lst" Path="Items.Count" />
                    <Binding ElementName="txtName" Path="Text" />
                    <Binding ElementName="txtAge" Path="Text" />
                </MultiBinding>
            </TextBlock.Text>
        </TextBlock>

Accesing it from code:

TextBlock textblock = FindName("MyTextBlock") as TextBlock;
var bindingExpression = BindingOperations.GetMultiBindingExpression(textblock, TextBlock.TextProperty);

Hope this helps