Question

I want to getBinding of a control’s property in wpf (like setBinding(Dp,Binding)). After that I want to add more binding to that one, like add validationRule in code (not in xaml). Can anyone reply with sample code.

Answer 1

BindingExpression bindingExpression = c_textBox1.GetBindingExpression(TextBox.TextProperty);
    Binding parentBinding = bindingExpression.ParentBinding;

    //make new MultiBinding expression and add parentBinding into it.
     MultiBinding bindingList = new MultiBInding();
     bindingList.Bindings.Add(parentBinding);
    c_textBox1.SetBinding(TextBox.TextProperty, bindingList);