GridView 实现服务器端和客户端全选的两种方法

<script language="javascript" type="text/javascript">
function CheckAll(oCheckbox)
  {
   var GridView2 = document.getElementById("<%=GridView2.ClientID %>");
   for(i = 1;i < GridView2.rows.length; i++)
   {
    GridView2.rows[i].cells[0].getElementsByTagName("INPUT")[0].checked = oCheckbox.checked;
   }
  }

    </script>

<table style="width:800px;font-size:12px;">
      <tr valign="top">
        <td>
          <asp:GridView ID="GridView1" runat="server" Font-Size="12px" BackColor="#FFFFFF"
            GridLines="Both" CellPadding="4" DataKeyNames="序号" AutoGenerateColumns="false">
            <HeaderStyle BackColor="#EDEDED" Height="26px" />
            <Columns>
              <asp:TemplateField>
                <HeaderTemplate>
                  <asp:CheckBox ID="CheckBox1" runat="server" Text="全选" AutoPostBack="true" OnCheckedChanged="CheckAll" />
                </HeaderTemplate>
                <ItemTemplate>
                  <asp:CheckBox ID="ItemCheckBox" runat="server" />
                </ItemTemplate>
              </asp:TemplateField>
              <asp:BoundField DataField="学生姓名" HeaderText="学生姓名" />
              <asp:BoundField DataField="语文" HeaderText="语文" />
              <asp:BoundField DataField="数学" HeaderText="数学" />
              <asp:BoundField DataField="英语" HeaderText="英语" />
              <asp:BoundField DataField="计算机" HeaderText="计算机" />
            </Columns>
          </asp:GridView>
          <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="得到选择的行值" />
        </td>
        <td align="right">
          <asp:GridView ID="GridView2" runat="server" Font-Size="12px" BackColor="#FFFFFF"
            GridLines="Both" CellPadding="4" DataKeyNames="序号" AutoGenerateColumns="false">
            <HeaderStyle BackColor="#EDEDED" Height="26px" />
            <Columns>
              <asp:TemplateField>
                <HeaderTemplate>
                  <input id="Checkbox2" type="checkbox" onclick="CheckAll(this)" runat="server" /><label>全选</label>
                </HeaderTemplate>
                <ItemTemplate>
                  <asp:CheckBox ID="ItemCheckBox" runat="server" />
                </ItemTemplate>
              </asp:TemplateField>
              <asp:BoundField DataField="学生姓名" HeaderText="学生姓名" />
              <asp:BoundField DataField="语文" HeaderText="语文" />
              <asp:BoundField DataField="数学" HeaderText="数学" />
              <asp:BoundField DataField="英语" HeaderText="英语" />
              <asp:BoundField DataField="计算机" HeaderText="计算机" />
            </Columns>
          </asp:GridView>
          <asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="得到选择的行值" />
        </td>
      </tr>
      <tr valign="top">
        <td>
          <asp:Literal ID="Ret1" runat="server"></asp:Literal>
        </td>
        <td align="right">
          <asp:Literal ID="Ret2" runat="server"></asp:Literal>
        </td>
      </tr>
    </table>

ICollection CreateDataSource()
    {
        System.Data.DataTable dt = new System.Data.DataTable();
        System.Data.DataRow dr;
        dt.Columns.Add(new System.Data.DataColumn("序号", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String)));
        dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal)));
        dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal)));
        dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal)));
        dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal)));

        for (int i = 0; i < 8; i++)
        {
            System.Random rd = new System.Random(Environment.TickCount * i); 
            dr = dt.NewRow();
            dr[0] = i.ToString();
            dr[1] = "【孟子E章】" + i.ToString();
            dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);
            dr[3] = System.Math.Round(rd.NextDouble() * 100, 2);
            dr[4] = System.Math.Round(rd.NextDouble() * 100, 2);
            dr[5] = System.Math.Round(rd.NextDouble() * 100, 2);
            dt.Rows.Add(dr);
        }
        System.Data.DataView dv = new System.Data.DataView(dt);
        return dv;
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

            GridView2.DataSource = GridView1.DataSource = CreateDataSource();
            GridView2.DataBind();
            GridView1.DataBind();
        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        Ret1.Text = "";
        foreach (GridViewRow gvr in GridView1.Rows)
        {
            CheckBox ch = (CheckBox)gvr.FindControl("ItemCheckBox");
            if (ch.Checked)
            {
                Ret1.Text += "<li>GridView1 您选择的是（键值）：" + GridView1.DataKeys[gvr.DataItemIndex].Value.ToString();
            }
        }
    }

    protected void Button2_Click(object sender, EventArgs e)
    {
        Ret2.Text = "";
        foreach (GridViewRow gvr in GridView2.Rows)
        {
            CheckBox ch = (CheckBox)gvr.FindControl("ItemCheckBox");
            if (ch.Checked)
            {
                Ret2.Text += "<li>GridView2 您选择的是（键值）：" + GridView2.DataKeys[gvr.DataItemIndex].Value.ToString();
            }
        }
    }

    protected void CheckAll(object sender, EventArgs e)
    {
        CheckBox cbx = (CheckBox)sender;
        foreach (GridViewRow gvr in GridView1.Rows)
        {
            CheckBox ch = (CheckBox)gvr.FindControl("ItemCheckBox");
            ch.Checked = cbx.Checked;
        }
    }