Server Error in '/' Application.

Class:DBUtils CMItem - Method:SelectOneItem - Exception:System.NullReferenceException: Object reference not set to an instance of an object.
  at DBLayer.SQLServerDB.executeQuery(String querySQL) in D:\documenti\Visual Studio 2008\Projects\riccionespiaggia28\DBLayer\SQLServerDB.cs:line 139
  at Items.DBUtils.SelectOneItem(String idItem) in C:\Users\m.pazzaglia\Documents\Visual Studio 2010\Projects\brasserie-cucina\Items\DB\DBUtils.cs:line 1088

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.Exception: Class:DBUtils CMItem - Method:SelectOneItem - Exception:System.NullReferenceException: Object reference not set to an instance of an object.
  at DBLayer.SQLServerDB.executeQuery(String querySQL) in D:\documenti\Visual Studio 2008\Projects\riccionespiaggia28\DBLayer\SQLServerDB.cs:line 139
  at Items.DBUtils.SelectOneItem(String idItem) in C:\Users\m.pazzaglia\Documents\Visual Studio 2010\Projects\brasserie-cucina\Items\DB\DBUtils.cs:line 1088

Source Error:


Line 31:             if (!idArt.Equals(""))
Line 32:             {
Line 33:                 art = DBUtils.getInstance.SelectOneItem(idArt);
Line 34:                 if (art!=null && art.id != 0)
Line 35:                 {

Source File: d:\inetpub\webs\scuoladicucinabrasserieit\controls\cm\DettaglioArticoloSingolo.ascx.cs    Line: 33

Stack Trace:


[Exception: Class:DBUtils CMItem - Method:SelectOneItem - Exception:System.NullReferenceException: Object reference not set to an instance of an object.
   at DBLayer.SQLServerDB.executeQuery(String querySQL) in D:\documenti\Visual Studio 2008\Projects\riccionespiaggia28\DBLayer\SQLServerDB.cs:line 139
   at Items.DBUtils.SelectOneItem(String idItem) in C:\Users\m.pazzaglia\Documents\Visual Studio 2010\Projects\brasserie-cucina\Items\DB\DBUtils.cs:line 1088]
   Items.DBUtils.SelectOneItem(String idItem) in C:\Users\m.pazzaglia\Documents\Visual Studio 2010\Projects\brasserie-cucina\Items\DB\DBUtils.cs:1092
   controls_DettaglioArticoloSingolo.Page_Load(Object sender, EventArgs e) in d:\inetpub\webs\scuoladicucinabrasserieit\controls\cm\DettaglioArticoloSingolo.ascx.cs:33
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +50
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Control.LoadRecursive() +141
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627


Version Information: Microsoft .NET Framework Version:2.0.50727.9174; ASP.NET Version:2.0.50727.9175