复选框全选、批量删除

// 脚本全选

 1 <head runat="server">
 2     <title></title>
 3     <script type="text/javascript">
 4         function selectAll(chk) {
 5             var checkboxs = document.getElementsByTagName("input");
 6             for (var i = 0; i < checkboxs.length; i++) {
 7                 if(checkboxs[i].type == "checkbox"){
 8                     checkboxs[i].checked = chk.checked;
 9                 }
10             }
11         }
12     </script>
13 </head>

1 <HeaderTemplate>
2           <asp:CheckBox ID="cboSelectAll" Text="全选" runat="server" AutoPostBack="True" oncheckedchanged="cboSelectAll_CheckedChanged" />|
4                <input type="checkbox" id="htmlCboSelectAll" onclick="selectAll(this)" />JS全选 <br />
6                <asp:LinkButton ID="lbDeleteSelected" runat="server" 
7                                onclick="lbDeleteSelected_Click" OnClientClick="return confirm('确定要批量删除吗？')">批量删除</asp:LinkButton>
8 </HeaderTemplate>

 1  //批量删除
 2         protected void lbDeleteSelected_Click(object sender, EventArgs e)
 3         {
 4             bool hasDeleteRow = false;//是否有选中要删除的项
 5             StringBuilder bookIDs = new StringBuilder("delete from BookInfo where bookid in(");
 6             //遍历GridView中的行，获取被选中行的主键值
 7             foreach (GridViewRow row in this.gvBookInfos.Rows)
 8             {
 9                 if (((CheckBox)row.FindControl("cboSelect")).Checked)
10                 {
11                     hasDeleteRow = true;
12                     int bookID = Convert.ToInt32(this.gvBookInfos.DataKeys[row.RowIndex].Value);
13                     bookIDs.Append(bookID+",");
14                 }
15             }
16             //没有选中行时，给出相应提示
17             if (!hasDeleteRow)
18             {
19                 Page.ClientScript.RegisterStartupScript(this.GetType(), "", "alert('请选择要删除的选项！')", true);
20                 return;
21             }
22             string ids = bookIDs.ToString();
23             ids = ids.Substring(0,ids.Length-1)+")";
24             int result = DBUtil.ExecuteSql(ids);
25             if (result > 0)
26             {
27                 Page.ClientScript.RegisterStartupScript(this.GetType(), "", "alert('批量删除成功！')", true);
28                 GridViewBind();
29             }
30             else
31             {
32                 Page.ClientScript.RegisterStartupScript(this.GetType(), "", "alert('批量删除失败！')", true);
33             }
34         }

// 复选框全选状态

 1  protected void cboSelectAll_CheckedChanged(object sender, EventArgs e)
 2         {
 3             //先获取到全选复选框的状态
 4             bool state = ((CheckBox)this.gvBookInfos.HeaderRow.FindControl("cboSelectAll")).Checked;
 5             //再设置每一个项中的复选框状态
 6             foreach (GridViewRow row in this.gvBookInfos.Rows)
 7             {
 8                 ((CheckBox)row.FindControl("cboSelect")).Checked = state;
 9             }
10         }