Question

Is there a way to fire a two way data bind when the key up event fires in Silverlight. Currently I have to lose focus on the textbox to get the binding to fire.

<TextBox x:Name="Filter" KeyUp="Filter_KeyUp" Text="{Binding Path=Filter, Mode=TwoWay }"/>

Answer 1

I have achieved this by doing this…

Filter.GetBindingExpression(TextBox.TextProperty).UpdateSource();

and in the XAML

<TextBox x:Name="Filter"  Text="{Binding Path=Filter, Mode=TwoWay, UpdateSourceTrigger=Explicit}" KeyUp="Filter_KeyUp"/>