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:

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:


[NullReferenceException: Object reference not set to an instance of an object.]
   LiderMed.catalog.EnableAccessoriesFilteredByFirstName() in D:\Clients\Lidermed\Code\LiderMed\catalog.aspx.cs:227
   LiderMed.catalog.lvProductFirstName_GetData(String categoryName, String subCategoryName, String query, String productFirstName) in D:\Clients\Lidermed\Code\LiderMed\catalog.aspx.cs:345

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) +0
   System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) +168
   System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +105
   lambda_method(Closure , MethodInfo , Object , Object[] ) +24
   System.Web.UI.WebControls.ModelDataSourceView.InvokeMethod(ModelDataSourceMethod method, Boolean isAsyncMethod) +326
   System.Web.UI.WebControls.ModelDataSourceView.InvokeMethod(ModelDataSourceMethod method) +7
   System.Web.UI.WebControls.ModelDataSourceView.GetSelectMethodResult(DataSourceSelectArguments arguments) +68
   System.Web.UI.WebControls.ModelDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +14
   System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +17
   System.Web.UI.WebControls.ModelDataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +81
   System.Web.UI.WebControls.DataBoundControl.PerformSelect() +169
   System.Web.UI.WebControls.ListView.PerformSelect() +103
   System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +71
   System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +93
   System.Web.UI.WebControls.ListView.CreateChildControls() +52
   System.Web.UI.Control.EnsureChildControls() +116
   System.Web.UI.Control.PreRenderRecursiveInternal() +49
   System.Web.UI.Control.PreRenderRecursiveInternal() +236
   System.Web.UI.Control.PreRenderRecursiveInternal() +236
   System.Web.UI.Control.PreRenderRecursiveInternal() +236
   System.Web.UI.Control.PreRenderRecursiveInternal() +236
   System.Web.UI.Control.PreRenderRecursiveInternal() +236
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4720


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0