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