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You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.  You create an AJAX-enabled Web form by using the following code fragment.  When the updFirstPanel UpdatePanel control is updated, a dynamic client script is registered.  You write the following code segment in the code-behind file of the Web form. (Line numbers are included for reference only.)  01 Protected Sub Page_Load(ByVal sender As Object, _ ByVal e As EventArgs)  02 If Not IsPostBack Then  03 Dim generatedScript As String = _  | English | Chinese | Japan | Korean | - 75 - Test Information Co., Ltd. All rights reserved. ScriptGenerator.GenerateScript()  04  05 End If  06 End Sub  You need to ensure that the client-script code is registered only when an asynchronous postback is issued on the updFirstPanel UpdatePanel control.  Which code segment should you insert at line 04?()

  • A、A
  • B、B
  • C、C
  • D、D
正确答案:D
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