[求助]初级错误！

{
if(Item.Text.Length>0)
{
try
{
AddVote(Item.Text.Trim());//.Trim 移除字符串两端的空白！！
BindVoteListData();
Response.Write("<script>window.alert('"+ASPNET2System.OPERATIONNOSELECTMESSAGE +"')</script>");
}
catch(Exception ex)
{
Response.Redirect("~/DesktopModules/ErrorPage.aspx?ErrorUrl="
+ASPNET2System.RedirectErrorUrl(Request.RawUrl)
+"&ErrorMessage="+ex.Message.Replace("\n"," "));
}
}

C:\Documents and Settings\Administrator\VSWebCache\BT-CONTROL\WebFileManage\VoteItemManage.aspx.cs(98): 找不到类型或命名空间名称“ASPNET2System”（是否缺少 using 指令或程序集引用？）