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? （）
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 void CustomValidator1_ServerValidate( object source, ServerValidateEventArgs args) { DateTime dt = String.IsNullOrEmpty(args.Value) DateTime.Now : Convert.ToDateTime(args.Value); args.IsValid = (DateTime.Now - dt).Days < 10; } You need to validate the value of TextBox1. Which code fragment should you add to the Web page?（）
单项选择题 You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a custom control named OrderForm. You write the following code segment. Public Delegate Sub _ CheckOrderFormEventHandler(ByVal e As EventArgs) Private Shared ReadOnly CheckOrderFormKey As New Object() public event CheckOrderFormEventHandler Public Custom Event CheckOrderForm As CheckOrderFormEventHandler AddHandler(ByVal value As CheckOrderFormEventHandler) Events.[AddHandler](CheckOrderFormKey, value) End AddHandler | English | Chinese | Japan | Korean | - 21 - Test Information Co., Ltd. All rights reserved. RemoveHandler(ByVal value As CheckOrderFormEventHandler) Events.[RemoveHandler](CheckOrderFormKey, value) End RemoveHandler RaiseEvent(ByVal e As EventArgs) End RaiseEvent End Event You need to provide a method that enables the OrderForm control to raise the CheckOrderForm event. Which code segment should you use?（）
