Server Error in '/' Application.

Non-static method requires a target.

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.Reflection.TargetException: Non-static method requires a target.

Source Error:


Line 40: 
Line 41:                 tin = db.SanPhams.Where(p => p.WebsiteID == wid && p.MaSanPham == tin.MaSanPham).FirstOrDefault();
Line 42:                 nsp = db.NhomSanPhams.FirstOrDefault(p => p.NhomSanPhamID == tin.NhomSanPhamID);
Line 43: 
Line 44:             }

Source File: c:\Webs\donganhdbj.com\controls\ProductDetail.ascx.cs    Line: 42

Stack Trace:


[TargetException: Non-static method requires a target.]
   System.Reflection.RuntimeMethodInfo.CheckConsistency(Object target) +14498232
   System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +163
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +98
   System.Reflection.RuntimePropertyInfo.GetValue(Object obj, Object[] index) +35
   System.Data.Entity.Core.Objects.ELinq.QueryParameterExpression.TryGetFieldOrPropertyValue(MemberExpression me, Object instance, Object& memberValue) +245
   System.Data.Entity.Core.Objects.ELinq.QueryParameterExpression.TryEvaluatePath(Expression expression, ConstantExpression& constantExpression) +411
   System.Data.Entity.Core.Objects.ELinq.QueryParameterExpression.EvaluateParameter(Object[] arguments) +120
   System.Data.Entity.Core.Objects.ELinq.ELinqQueryState.GetExecutionPlan(Nullable`1 forMergeOption) +1488
   System.Data.Entity.Core.Objects.<>c__DisplayClass3.<GetResults>b__2() +38
   System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction(Func`1 func, IDbExecutionStrategy executionStrategy, Boolean startLocalTransaction, Boolean releaseConnectionOnSuccess) +462
   System.Data.Entity.Core.Objects.<>c__DisplayClass3.<GetResults>b__1() +203
   System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Func`1 operation) +234
   System.Data.Entity.Core.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +357
   System.Data.Entity.Core.Objects.ObjectQuery`1.<System.Collections.Generic.IEnumerable<T>.GetEnumerator>b__0() +30
   System.Data.Entity.Internal.LazyEnumerator`1.MoveNext() +39
   System.Linq.Enumerable.FirstOrDefault(IEnumerable`1 source) +209
   controls_ProductDetail.Page_Load(Object sender, EventArgs e) in c:\Webs\donganhdbj.com\controls\ProductDetail.ascx.cs:42
   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.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:4.8.4676.0