单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You derive a new validation control from the BaseValidator class.  The validation logic for the control is implemented in the Validate method in the following manner. Protected Overloads Function Validate( _  ByVal value As String) As Boolean  ...  End Function  You need to override the method that validates the value of the related control.  Which override method should you use?（）

单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You derive a new validation control from the BaseValidator class.  The validation logic for the control is implemented in the Validate method in the following manner. protected static bool Validate(string value) {  ...  }  You need to override the method that validates the value of the related control.  Which override method should you use?（）

单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You add a TextBox control named TextBox1.  You write the following code segment for validation.  Protected Sub _  | English | Chinese | Japan | Korean | - 24 - Test Information Co., Ltd. All rights reserved. CustomValidator1_ServerValidate(ByVal source As Object, _  ByVal args As ServerValidateEventArgs)  Dim dt As DateTime = _  IIf([String].IsNullOrEmpty(args.Value), _  DateTime.Now, Convert.ToDateTime(args.Value))  args.IsValid = (DateTime.Now - dt).Days < 10  End Sub  You need to validate the value of TextBox1.  Which code fragment should you add to the Web page? （）