一个很好的全选，反选操作

JS文件

<script language="JavaScript">
        function ReverseSelect(checkid)
        {
            var objcheck=eval("document.all." + checkid);
            if(objcheck.length!=1&&objcheck.length!=0){
                for(var i=0;i<objcheck.length;i++){
                if(objcheck[i].checked==true)
                    objcheck[i].checked=false;
                else
                    objcheck[i].checked=true;        
                }
            }
            
            if(objcheck.length==1){
                if(objcheck.checked==true)
                objcheck.checked=false;
                else
                objcheck.checked=true;        
            }    
    
        }
        </script>

 HTML文件

<asp:TemplateColumn HeaderText="&lt;a href=javascript:ReverseSelect('IsVouchBox')&gt;反选&lt;/a&gt;">
                                                        <HeaderStyle Wrap="False" HorizontalAlign="Center" CssClass="HeadTr"></HeaderStyle>
                                                        <ItemStyle Wrap="False" HorizontalAlign="Center"></ItemStyle>
                                                        <ItemTemplate>
                                                            <INPUT type=checkbox value='<%# (DataBinder.Eval(Container, "DataItem.id")).ToString()%>' id="IsVouchBox">
                                                        </ItemTemplate>
                                            </asp:TemplateColumn>

CS文件

private void Linkbutton2_Click(object sender, System.EventArgs e)
        {
            string VouchId = "";
            if(Request.Form["IsVouchBox"]!=null && Request.Form["IsVouchBox"]!="")
            {
                VouchId=Request.Form["IsVouchBox"].ToString();
                if (VouchId.Length>0)
                {
                    sqlstr="update tb_daily set status=-1 where id in ("+VouchId.Replace(";",",")+")";
                    dbmos.ExecuteNonQuery(sqlstr,connmsg);
                    LabRS.Text="全部删除文章成功！";
                }            
            }
            pagenow=int.Parse(ViewState["pagenow"].ToString());
            BindBase(pagenow);
        }