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 81:         MySqlCommand cmd = new MySqlCommand(selectQuery, connection);
Line 82:   
Line 83:         dataReader = cmd.ExecuteReader();
Line 84: 
Line 85:         if (dataReader.HasRows)

Source File: d:\vhosts\zemedya.com\adnhediye.com\App_Code\DBManager.cs    Line: 83

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   MySql.Data.MySqlClient.NativeDriver.ExecuteCommand(DBCmd cmd, Byte[] bytes, Int32 length) +59
   MySql.Data.MySqlClient.NativeDriver.Query(Byte[] bytes, Int32 length) +65
   MySql.Data.MySqlClient.Statement.ExecuteNext() +120
   MySql.Data.MySqlClient.PreparableStatement.ExecuteNext() +11
   MySql.Data.MySqlClient.PreparableStatement.Execute() +35
   MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior) +530
   MySql.Data.MySqlClient.MySqlCommand.ExecuteReader() +6
   DBManager.Select(String selectQuery) in d:\vhosts\zemedya.com\adnhediye.com\App_Code\DBManager.cs:83
   ADN.urunanakategori.GetCategoriListAsDataTable(String ID) in d:\vhosts\zemedya.com\adnhediye.com\App_Code\urun.cs:582
   urundetay.getMenuTekstil(String ID) in d:\vhosts\zemedya.com\adnhediye.com\urundetay.aspx.cs:133
   urundetay.Page_Load(Object sender, EventArgs e) in d:\vhosts\zemedya.com\adnhediye.com\urundetay.aspx.cs:42
   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.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0