GridView中实现CheckBox的全选

用服务器端的方法：
在页面上放一个gridview控件，配置好数据源，编辑列，添加一个模版列，再编辑模版，放入一个checkbox控件。代码如下：

< asp:GridView  ID ="GridView1"  runat ="server"  AllowPaging ="True"  AutoGenerateColumns ="False"
        DataKeyNames ="AreaID"  DataSourceID ="SqlDataSource1" >
         < Columns >
             < asp:BoundField  DataField ="AreaID"  HeaderText ="AreaID"  ReadOnly ="True"  SortExpression ="AreaID"   />
             < asp:BoundField  DataField ="CityID"  HeaderText ="CityID"  SortExpression ="CityID"   />
             < asp:TemplateField >
                 < HeaderTemplate >
                     < asp:CheckBox  ID ="chkAll"  runat ="server"  AutoPostBack ="True"  OnCheckedChanged ="chkAll_CheckedChanged"   />
                 </ HeaderTemplate >
                 < ItemTemplate >
                     < asp:CheckBox  ID ="chkItem"  runat ="server"   />
                 </ ItemTemplate >
             </ asp:TemplateField >
         </ Columns >
     </ asp:GridView >

后台cs代码：

  protected   void  chkAll_CheckedChanged( object  sender, EventArgs e)
     {
        for (int i = 0; i < this.GridView1.Rows.Count; i++)
        {
            ((CheckBox)GridView1.Rows[i].FindControl("chkItem")).Checked = ((CheckBox)this.GridView1.HeaderRow.FindControl("chkAll")).Checked;
        }
    }

用脚本实现：

< asp:GridView  ID ="GridView1"  runat ="server"  AllowPaging ="True"  AutoGenerateColumns ="False"
        DataKeyNames ="AreaID"  DataSourceID ="SqlDataSource1" >
         < Columns >
             < asp:BoundField  DataField ="AreaID"  HeaderText ="AreaID"  ReadOnly ="True"  SortExpression ="AreaID"   />
             < asp:BoundField  DataField ="CityID"  HeaderText ="CityID"  SortExpression ="CityID"   />
             < asp:TemplateField >
                 < HeaderTemplate >
                     < input  id ="chkAll"   onclick ="SelectAll(this)" ; type =checkbox >
                 </ HeaderTemplate >
                 < ItemTemplate >
                     < input  id ="chkItem"  type =checkbox >                 
                  </ ItemTemplate >
             </ asp:TemplateField >
         </ Columns >
     </ asp:GridView >

再客户端写javascript

< script type = " text/javascript " >
        function  SelectAll(chkbox)
            {
              var box=chkbox;
              state=theBox.checked;    
              elem=box.form.elements;
              for(i=0;i<elem.length;i++)
              if(elem[i].type=="checkbox" && elem[i].id!=box.id)
               {
                    if(elem[i].checked!=state)
                    {
                       elem[i].click();
                    }
               }
          }
   </ script >

=========================================================

<asp:TemplateColumn HeaderText="&lt;input type=checkbox name='selectall' onClick='SelectAll(document.Form1)'&gt;全选">
<ItemTemplate>
<asp:CheckBox id="CheckBox1" runat="server"> </asp:CheckBox>
</ItemTemplate>
</asp:TemplateColumn>
function SelectAll(frm)
{
    for (var i=0;i <frm.elements.length;i++)
      frm.elements[i].checked = frm.selectall.checked;
}
 
function CheckSelect(frm)
{
var col=frm.elements;
var obj=frm.selectall;
var intEls=0,intChks=0;
for(var i=0;i <col.length;i++)
{
if(col[i].type=="checkbox"&&col[i].name!="selectall")
{
intEls++;
if(col[i].checked)
intChks++;
}
}
obj.checked=(intEls==intChks);
}

=============================================================================== CS代码，我是用DATALIST实现的，GRIDVIEW也差不多吧 if (((CheckBox)sender).Checked) { for (int i = 0; i < DataList1.Items.Count; i++) { CheckBox cb = (CheckBox)DataList1.Items[i].FindControl("cb"); cb.Checked = true; } } else { for (int i = 0; i < DataList1.Items.Count; i++) { CheckBox cb = (CheckBox)DataList1.Items[i].FindControl("cb"); cb.Checked = false; } } 另外附上获得所选CheckBox对应的ID代码 for (int i = 0; i < DataList1.Items.Count; i++) { CheckBox cb = (CheckBox)DataList1.Items[i].FindControl("cb"); HiddenField hf = (HiddenField)DataList1.Items[i].FindControl("HiddenField1"); if(cb.check) { //... } } 用了一个影藏域，绑定数据库里面的ID，希望对你有帮助. ===================================================================================== js代码 GridView中的代码： 0