private static void OnSetCustomCommandParameterCallback(DependencyObject dep,
DependencyPropertyChangedEventArgs e)
{
var textBox = dep as TextBox;
if (textBox != null)
{
TextBoxTextChangedCommandBehavior behavior = GetOrCreateTextBoxBehavior(textBox);
behavior.CommandParameter = e.NewValue;
}
}
private static TextBoxTextChangedCommandBehavior GetOrCreateTextBoxBehavior(TextBox textBox)
{
var behavior = textBox.GetValue(TextChangedCommandBehaviorProperty) as TextBoxTextChangedCommandBehavior;
if (behavior == null)
{
behavior = new TextBoxTextChangedCommandBehavior(textBox);
textBox.SetValue(TextChangedCommandBehaviorProperty, behavior);
}
return(behavior);
}