Hello msdn,
How can I override a DependencyProperty, in such a way that,it do not hit the base class's PropertyChanged Callback methods?
Recently I have created a class with a dependency property, I have overrided this dependencyProperty in a descendent class, But when I change the value, It is hitting not only the derived class PropertyChanged callback, But also the base class, How can I avoid it hitting the base class?
Could anyone help me to do this, My code is given below.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace WpfApplication7
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
C c = new C();
c.HasVlidation = true;
}
}
public class P:Control
{
static P()
{
HasVlidationProperty =
DependencyProperty.Register("HasVlidation", typeof(bool), typeof(P), new FrameworkPropertyMetadata(false,changed));
}
public static readonly DependencyProperty HasVlidationProperty;
public bool HasVlidation
{
get { return (bool)GetValue(HasVlidationProperty); }
set { SetValue(HasVlidationProperty, value); }
}
// Using a DependencyProperty as the backing store for HasVlidation. This enables animation, styling, binding, etc...
private static void changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
}
public P()
{
}
}
public class C:P
{
static C()
{
P.HasVlidationProperty.OverrideMetadata(typeof(C), new FrameworkPropertyMetadata(false, changed));
}
private static void changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
}
public C()
{
}
}
}Regards
Salam
salampv.07