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:

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:


[TargetException: Non-static method requires a target.]
   System.Reflection.RuntimeMethodInfo.CheckConsistency(Object target) +14242360
   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.Objects.ELinq.QueryParameterExpression.TryGetFieldOrPropertyValue(MemberExpression me, Object instance, Object& memberValue) +231
   System.Data.Objects.ELinq.QueryParameterExpression.TryEvaluatePath(Expression expression, ConstantExpression& constantExpression) +422
   System.Data.Objects.ELinq.QueryParameterExpression.EvaluateParameter(Object[] arguments) +126
   System.Data.Objects.ELinq.ELinqQueryState.GetExecutionPlan(Nullable`1 forMergeOption) +1568
   System.Data.Objects.ObjectQuery`1.GetResults(Nullable`1 forMergeOption) +218
   System.Data.Objects.ObjectQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator() +41
   System.Linq.Enumerable.FirstOrDefault(IEnumerable`1 source) +186
   CertificateFrontEnd.detail.Page_Load(Object sender, EventArgs e) +2456
   System.Web.UI.Control.OnLoad(EventArgs e) +108
   System.Web.UI.Control.LoadRecursive() +90
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4494.0