单选题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application allows users to post comments to a page that can be viewed by other users. You add a SqlDataSource control named SqlDS. You write the following code segment： 01 private void SaveComment（） 02 { 03 string ipaddr； 04 ► 05 SqlDS1.InsertParameters["IPAddress"].DefaultValue = ipaddr； 06 ... 07 SqlDS1.Insert（）； 08 } You need to ensure that the IP Address of each user who posts a comment is captured alongwith the user’s comment. Which code segment should you insert at line 04？（）Aipaddr = Server[REMOTE_ADDR].ToString(); Bipaddr = Session[REMOTE_ADDR].ToString(); Cipaddr = Application[REMOTE_ADDR].ToString(); Dipaddr = Request.ServerVariables[REMOTE_ADDR].ToString();
单选题
You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application allows users to post comments to a page that can be viewed by other users. You add a SqlDataSource control named SqlDS. You write the following code segment： 01 private void SaveComment（） 02 { 03 string ipaddr； 04 ► 05 SqlDS1.InsertParameters["IPAddress"].DefaultValue = ipaddr； 06 ... 07 SqlDS1.Insert（）； 08 } You need to ensure that the IP Address of each user who posts a comment is captured alongwith the user’s comment. Which code segment should you insert at line 04？（）
A
ipaddr = Server[REMOTE_ADDR].ToString();
B
ipaddr = Session[REMOTE_ADDR].ToString();
C
ipaddr = Application[REMOTE_ADDR].ToString();
D
ipaddr = Request.ServerVariables[REMOTE_ADDR].ToString();
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