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 115:        for (int i = 0; i < ltr.Items.Count; i++)
Line 116:        {
Line 117:            if (ltr.Items[i].ChildRazdels.IndexOf(ID) > -1)
Line 118:            {
Line 119:                //PlaceHolder1.Controls.Add(new LiteralControl("<p style='margin-left: 20px;'>" + ltr.Items[i].ID + "</p>"));

Source File: e:\rooms\u208891\mega-shkola.ru\www\MasterPage.master.cs    Line: 117

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   MasterPage.IsParent(Int32 ID) in e:\rooms\u208891\mega-shkola.ru\www\MasterPage.master.cs:117
   MasterPage.Page_Init(Object sender, EventArgs e) in e:\rooms\u208891\mega-shkola.ru\www\MasterPage.master.cs:68
   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.OnInit(EventArgs e) +99
   System.Web.UI.UserControl.OnInit(EventArgs e) +77
   System.Web.UI.Control.InitRecursive(Control namingContainer) +333
   System.Web.UI.Control.InitRecursive(Control namingContainer) +210
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +378


Version Information: Microsoft .NET Framework Version:2.0.50727.9044; ASP.NET Version:2.0.50727.9047