c# - 获取 Validation.Error 事件的属性

Question

是否可以获得触发事件的绑定：Validation.Error？

例如：我在文本框中注册了此活动：

 <TextBox Validation.Error="My_Error" Text="{Binding MyProp,UpdateSourceTrigger=PropertyChanged,NotifyOnValidationError=True}" />

该事件在出现验证错误并到达以下函数时运行：

private void My_Error(object sender, ValidationErrorEventArgs e)
{
  //Here I want to get the property for which fired the event (MyProp). Is it possible?
}

Answer 1

我找到了一种方法：

        viewmodel Vm = (e.Error.BindingInError as BindingExpression).DataItem as viewmodel ;// Take viem model from data item. (I think that data item is the binding of the window - not sure)

        string propName= (e.Error.BindingInError as BindingExpression).ParentBinding.Path.Path;// The path is the prop name

        System.Reflection.PropertyInfo prop = Vm.GetType().GetProperty(propName);// Here the prop

        var valProp = prop.GetValue(Vm, null);//Here the value