Server Error in '/' Application.

Specified cast is not valid.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidCastException: Specified cast is not valid.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[InvalidCastException: Specified cast is not valid.]
   MathExpress.DataAccess.mo_NguoiSuDungRow.get_LastVisitedTheoSite() in D:\2023\HTN\Src\MathExpress\DataAccess\NguoiSuDungDAO.Designer.cs:6255

[StrongTypingException: The value for column 'LastVisitedTheoSite' in table 'mo_NguoiSuDung' is DBNull.]
   MathExpress.DataAccess.mo_NguoiSuDungRow.get_LastVisitedTheoSite() in D:\2023\HTN\Src\MathExpress\DataAccess\NguoiSuDungDAO.Designer.cs:6258
   ME_NguoiSuDung_UserControl_UserInfoControl_Full.GetCommon_UserInfoPublic(Int32 userID) +1202
   ME_NguoiSuDung_UserControl_UserInfoControl_Full.Page_Load(Object sender, EventArgs e) +895
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Control.LoadRecursive() +185
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4110.0