Server Error in '/' Application.

Connection must be valid and open.

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.InvalidOperationException: Connection must be valid and open.

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:


[InvalidOperationException: Connection must be valid and open.]
   MySql.Data.MySqlClient.MySqlCommand.CheckState() +249
   MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior) +54
   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
   urunler.getMenuTekstil(String ID) in d:\vhosts\zemedya.com\adnhediye.com\urunler.aspx.cs:99
   urunler.Page_Load(Object sender, EventArgs e) in d:\vhosts\zemedya.com\adnhediye.com\urunler.aspx.cs:43
   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