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 18:         }
Line 19:         var galerisorgu = (from s in veri.galeris where s.id == int.Parse(pid.ToString()) select s).SingleOrDefault();
Line 20:         DirectoryInfo klasorBilgisi = new DirectoryInfo(Server.MapPath("~/uploaded/galeri/" + galerisorgu.klasor));
Line 21:         ltDetayGaleri.Text += "   <div class='item active isotope'>                         ";
Line 22:         ltDetayGaleri.Text += "<div class='row'>    ";

Source File: c:\Home\yaglidere.bel.tr\httpdocs\galeri_detay.aspx.cs    Line: 20

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   galeri_detay.Page_Load(Object sender, EventArgs e) in c:\Home\yaglidere.bel.tr\httpdocs\galeri_detay.aspx.cs:20
   System.Web.UI.Control.OnLoad(EventArgs e) +105
   System.Web.UI.Control.LoadRecursive() +67
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3784


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4081.0