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 13: 
Line 14:         int kategoriID = Convert.ToInt32(Request.QueryString["id"]);
Line 15:         string kategoriBaslik = kategori.Select(kategoriID).Adi;
Line 16: 
Line 17: 

Source File: c:\inetpub\vhosts\ozenplastik.com\httpdocs\urun-kategori.aspx.cs    Line: 15

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   urun_kategori.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\ozenplastik.com\httpdocs\urun-kategori.aspx.cs:15
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +95
   System.Web.UI.Control.LoadRecursive() +59
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.3930.0