单选题
You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a class that contains the following code segment. (Line numbers are included for reference only.) 01 Public Function GetCachedProducts( _ ByVal conn As SqlConnection) As Object 02 03 If Cache("products") Is Nothing Then 04 Dim cmd As New SqlCommand("SELECT * FROM Products", conn) 05 conn.Open（ ） 06 Cache.Insert("products", GetData(cmd)) 07 conn.Close（ ） 08 End If 09 Return Cache("products") 10 End Function 11 12 Public Function GetData(ByVal prodCmd As SqlCommand) As Object 13 14 End Function Each time a Web form has to access a list of products, the GetCachedProducts method is called to provide this list from the Cache object. You need to ensure that the list of products is always available in the Cache object. Which code segment should you insert at line 13?（） 
发布日期：2021-01-28
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