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 99: 
Line 100:        if (connection.State == ConnectionState.Closed) {
Line 101:            connection.Open();
Line 102:        }
Line 103:

Source File: d:\vhosts\zemedya.com\elmaagaci.com.tr\App_Code\DBManager.cs    Line: 101

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   MySql.Data.MySqlClient.NativeDriver.Configure(MySqlConnection conn) +20
   MySql.Data.MySqlClient.MySqlConnection.Open() +422
   DBManager.Select(String selectQuery) in d:\vhosts\zemedya.com\elmaagaci.com.tr\App_Code\DBManager.cs:101
   DAL.urunanakategori.GetCategoryAsDataTableByID(String ID) in d:\vhosts\zemedya.com\elmaagaci.com.tr\App_Code\urun.cs:759
   icerik.Page_Load(Object sender, EventArgs e) in d:\vhosts\zemedya.com\elmaagaci.com.tr\icerik.aspx.cs:26
   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