Server Error in '/' Application.

Object reference not set to an instance of an object.

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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 320:
Line 321:
Line 322:        DataTable dtPosition = TypeUtils.InvokeDataTableMethod3("StylesDrop.Layout" + "DEFAULT", "StylesDrop.Layout" + "DEFAULT", Class, "getData");
Line 323:        DataTable dtTemp = new DataTable();
Line 324:        dtTemp.Columns.Add("Group", typeof(string));

Source File: c:\DB\tvh.vn\MasterPage.master.cs    Line: 322

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   TypeUtils.InvokeDataTableMethod3(String assemblyName, String namespaceName, String typeName, String methodName) +137
   MasterPage.Page_Init(Object sender, EventArgs e) in c:\DB\tvh.vn\MasterPage.master.cs:322
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnInit(EventArgs e) +95
   System.Web.UI.UserControl.OnInit(EventArgs e) +83
   System.Web.UI.Control.InitRecursive(Control namingContainer) +139
   System.Web.UI.Control.InitRecursive(Control namingContainer) +312
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +408


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3190.0