[0509][前台]不登录投票出错
后台设置的是不用登陆。结果登录后投票没问题，没登陆的时候出现错误：
System.Exception: 您没有登录系统或会话已过期,请重新登录 at NetCMS.Global.Current.GetInfo() in d:\web\NetCMS V1.5_Src\NetCMS.Global\Global.cs:line 62 at NetCMS.Global.Current.get_SiteID() in d:\web\NetCMS V1.5_Src\NetCMS.Global\Global.cs:line 19 at NetCMS.DALSQLServer.Survey.GetLastVoteTimeByIP(Int32 TID, String IPAddr, String UserNum) in d:\web\NetCMS V1.5_Src\NetCMS.DALSQLServer\Survey.cs:line 108 at NetCMS.Content.Survey.GetLastVoteTimeByIP(Int32 TID, String IPAddr, String UserNum) in E:\simplt\NETCMS\NetCMS.Content\Survey.cs:line 53 at survey_Vote_Ajax.Page_Load(Object sender, EventArgs e) in E:\simplt\NETCMS\NetCMS.Web\survey\Vote_Ajax.aspx.cs:line 67 at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
