private static void CommandProperty_Changed(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs e)
{
TextBox element = dependencyObject as TextBox;
if (element != null)
{
TextChangedBehavior behavior = GetOrCreateBehavior(element);
behavior.Command = e.NewValue as ICommand;
}
}
private static TextChangedBehavior GetOrCreateBehavior(TextBox element)
{
TextChangedBehavior behavior = element.GetValue(TextChangedBehaviourProperty) as TextChangedBehavior;
if (behavior == null)
{
behavior = new TextChangedBehavior(element);
element.SetValue(TextChangedBehaviourProperty, behavior);
}
return(behavior);
}
public static void SetTextChangedCommandBehavior(DependencyObject obj,
TextChangedBehavior value)
{
obj.SetValue(TextChangedBehaviourProperty, value);
}