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 48:             SqlCommand cmd = new SqlCommand(sql, conn);
Line 49:             conn.Open();
Line 50:             deger = cmd.ExecuteScalar().ToString();
Line 51:             conn.Close();
Line 52:             return deger;

Source File: D:\vhosts\firmaekle.com\http\App_Code\Data\General.cs    Line: 50

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   Kartal.Data.General.GetOneValue(String sql) in D:\vhosts\firmaekle.com\http\App_Code\Data\General.cs:50
   Controls_Pages_firmDetails.Page_Load(Object sender, EventArgs e) in D:\vhosts\firmaekle.com\http\Controls\Pages\firmDetails.ascx.cs:65
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Control.LoadRecursive() +134
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4676.0