You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You add a Web form that contains the following code fragment： <asp：GridView ID="gvProducts" runat="server" AllowSorting="True" DataSourceID="Products"> </asp：GridView> <asp：ObjectDataSource ID="Products" runat="server" SelectMethod="GetData" TypeName="DAL" /> </asp：ObjectDataSource> You write the following code segment for the GetData method of the DAL class： 01 public object GetData（） { 02 SqlConnection cnn = new SqlConnection（ ） 03 string strQuery = "SELECT * FROM Products"； 04 ► 05 } You need to ensure that the user can use the sorting functionality of the gvProducts GridView control. Which code segment should you insert at line 04？（）
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