private static void OnSetCommandParameterCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TextBox tb = d as TextBox;
if (tb != null)
{
TextBoxTextChangedCommandBehavior behavior = GetOrCreateBehavior(tb);
behavior.CommandParameter = e.NewValue;
}
}
private static TextBoxTextChangedCommandBehavior GetOrCreateBehavior(TextBox tb)
{
TextBoxTextChangedCommandBehavior behavior =
tb.GetValue(TextChangedCommandBehaviorProperty) as TextBoxTextChangedCommandBehavior;
if (behavior == null)
{
behavior = new TextBoxTextChangedCommandBehavior(tb);
tb.SetValue(TextChangedCommandBehaviorProperty, behavior);
}
return(behavior);
}