1  <asp:gridview id="gridview1" runat="server" autogeneratecolumns="false" pagesize="5"
 2                         width="726px" allowpaging="true" allowsorting="true"
 3                          datakeynames="db1_1,db1_2"  onrowdeleting="gridview1_rowdeleting"   onpageindexchanging="gridview1_pageindexchanging" onrowdatabound="gridview1_rowdatabound" onsorting="gridview1_sorting" height="279px" >
 4                         <columns>
 5                             <asp:templatefield headertext="序号" >
 6                                 <itemtemplate>
 7                                 <%# this.gridview1.pageindex * this.gridview1.pagesize + this.gridview1.rows.count + 1%>
 8                                 </itemtemplate>
 9                             </asp:templatefield>
10                             <asp:templatefield  headertext="选择" >
11                                 <itemtemplate>
12                                     <asp:checkbox id="chkselect" runat="server" ></asp:checkbox>
13                                 </itemtemplate>
14                             </asp:templatefield>
15                          <asp:templatefield headertext="操作" showheader="false">
16                              <itemtemplate>
17                             <asp:linkbutton id="lbtndelete" runat="server" causesvalidation="false" commandname="delete"
18                                 text="删除" onclientclick="return confirm(确认要删除吗？);"></asp:linkbutton>
19                         </itemtemplate>
20                         </asp:templatefield>
21                        </columns>
22                        <alternatingrowstyle backcolor="aquamarine" />
23                     </asp:gridview>

1  <asp:checkbox id="chkselectall" runat="server" text="全部选中" oncheckedchanged="chkselectall_checkedchanged" autopostback="true" ></asp:checkbox>
2                     <asp:button id="btndelete" runat="server" text="删除" onclick="btndelete_click"  />

 1   protected void btndelete_click(object sender, eventargs e)
 2     {
 3         string strdelete = "";
 4         for (int i = 0; i < this.gridview1.rows.count; i++)
 5         {
 6             string label;
 7             bool ischecked = ((checkbox)gridview1.rows[i].findcontrol("chkselect")).checked;
 8             label = ((label)gridview1.rows[i].findcontrol("labxh")).text;
 9             if (ischecked)
10             {
11                strdelete = "db1_1" + "=" + label;
12             }
13         }
14         conn.runsql("delete from db1 where " + strdelete
15         this.chkselectall.checked = false;
16         gridviewbind();
17     }
18 
19   protected void chkselectall_checkedchanged(object sender, eventargs e)
20     {
21         //遍历gridview行获取checkbox属性
22     for (int i = 0; i < this.gridview1.rows.count; i++)
23         {
24             ((checkbox)gridview1.rows[i].findcontrol("chkselect")).checked = this.chkselectall.checked;
25         }
26     }