- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
You create a Web page that has a GridView control named GridView1. The GridView1 control displays the
| English | Chinese | Japan | Korean | - 88 - Test Information Co.， Ltd. All rights reserved. data from a database named Region and a table named Location.
You write the following code segment to populate the GridView1 control. （Line numbers are included for reference only.）
01 protected void Page_Load（object sender， EventArgs e）
02 {
03 string connstr；
04
05 SqlDependency.Start（connstr）；
06 using （SqlConnection connection =
07 new SqlConnection（connstr））
08 {
09 SqlCommand sqlcmd = new SqlCommand（）；
10 DateTime expires = DateTime.Now.AddMinutes（30）；
11 SqlCacheDependency dependency = new
12 SqlCacheDependency（"Region"， "Location"）；
13 Response.Cache.SetExpires（expires）；
14 Response.Cache.SetValidUntilExpires（true）；
15 Response.AddCacheDependency（dependency）；
16
17 sqlcmd.Connection = connection；
18 GridView1.DataSource = sqlcmd.ExecuteReader（）；
19 GridView1.DataBind（）；
20 }
21 }
You need to ensure that the proxy servers can cache the content of the GridView1 control. Which code segment should you insert at line 16？（）
A.A
B.B
C.C
D.D
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