Server Error in '/' Application.

ID can't be NULL
Parameter name: ID

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.ArgumentOutOfRangeException: ID can't be NULL
Parameter name: ID

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:


[ArgumentOutOfRangeException: ID can't be NULL
Parameter name: ID]
   Moon.BaiGiang.DAL.BG_New_Course.set_ID(SqlInt32 value) +128
   Bai_Hoc_Default.Page_Load(Object sender, EventArgs e) +855
   System.Web.UI.Control.OnLoad(EventArgs e) +106
   System.Web.UI.Control.LoadRecursive() +68
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4081.0