你可能感興趣的試題

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. 
You write the following code segment in the code-behind file to create a Web form. (Line numbers are included for reference only.) 
01 string strQuery = "select * from Products;"
02 + "select * from Categories"; 
03 SqlCommand cmd = new SqlCommand(strQuery, cnn); 
04 cnn.Open(); 
05 SqlDataReader rdr = cmd.ExecuteReader(); 
06 
07 rdr.Close(); 
08 cnn.Close(); 
You need to ensure that the gvProducts and gvCategories GridView controls display the data that is contained in the following two database tables: 
¡¤The Products database tabl 
¡¤The Categories database tabl 
| English | Chinese | Japan | Korean | - 46 - Test Information Co., Ltd. All rights reserved. Which code segment should you insert at line 06?（）

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?（）