Webform（邮箱模式）

 <asp:Repeater ID="Repeater1" runat="server">
             <HeaderTemplate>
                 <table id="tb1">
                     <tr id="tr1">
                         <td>全选<input type="checkbox" id="ckall" /></td>
                         <td>学号</td>
                         <td>姓名</td>
                         <td>性别</td>
                         <td>生日</td>
                         <td>年龄</td>
                         <td>专业</td>
                         <td>民族</td>
                         <td>操  作</td>
                     </tr>
             </HeaderTemplate>
             <ItemTemplate>
                 <tr class="tr_item" style="<%#Eval("Red")%>">
                      <td>
                         <input type="checkbox" class="ck" name="aaa" value='<%#Eval("Code") %>' /></td>
                     <td><%#Eval("Code")%></td>
                     <td><%#Eval("Name")%></td>
                     <td><%#Eval("SexStr")%></td>
                     <td><%#Eval("BirStr")%></td>
                     <td><%#Eval("Age")%></td>
                     <td><%#Eval("SubjectName")%></td>
                     <td><%#Eval("NationName")%></td>
                     <td>
                          <a id="lian"  onclick="return del()" href="Delete.aspx?id=<%#Eval("Code") %>">删除</a>&nbsp;
                         <a id="xiu" target="_blank"  href="Update.aspx?up=<%#Eval("Code") %>">修改</a>
                     </td>
                 </tr>
             </ItemTemplate>
             <FooterTemplate>
                 </table>

             </FooterTemplate>
         </asp:Repeater>

HTML代码

 var oCkall = document.getElementById("ckall");

      oCkall.onclick = function () {
          var oCks = document.getElementsByClassName("ck");
          for (var i = ; i < oCks.length; i++) {
              oCks[i].checked = oCkall.checked;
          }
      };

      var oCkss = document.getElementsByClassName("ck");

      for (var i = ; i < oCkss.length;i++) {
          oCkss[i].onclick = function () {
              var count = ;
              for (var j = ; j < oCkss.length;j++) {
                  if (oCkss[j].checked == false) {
                      count++;
                  }
              };//for

              if (count <= ) {
                  oCkall.checked = true;
              }
              else {
                  oCkall.checked = false;
              }

          };//ockss.click
      }//ockss.onclick for

js代码

void Button1_Click(object sender, EventArgs e)
    {
        string aaaa = Request["aaa"];
        Label1.Text = aaaa;

        string[] all = aaaa.Split(',');

    }