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 87:             MySqlCommand cmd = new MySqlCommand(selectQuery, connection);
Line 88: 
Line 89:             dataReader = cmd.ExecuteReader();
Line 90: 
Line 91:             if (dataReader.HasRows)

Source File: d:\vhosts\prestijyapim.com\httpdocs\App_Code\DBManager.cs    Line: 89

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\prestijyapim.com\httpdocs\App_Code\DBManager.cs:89
   DAL.etkinlik.GetTopVideo() in d:\vhosts\prestijyapim.com\httpdocs\App_Code\etkinlik.cs:138
   _Default.getTopVideo() in d:\vhosts\prestijyapim.com\httpdocs\Default.aspx.cs:356
   _Default.Page_Load(Object sender, EventArgs e) in d:\vhosts\prestijyapim.com\httpdocs\Default.aspx.cs:19
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +51
   System.Web.UI.Control.OnLoad(EventArgs e) +95
   System.Web.UI.Control.LoadRecursive() +59
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +678


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