Server Error in '/' Application.

Unable to connect to any of the specified MySQL hosts

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: MySql.Data.MySqlClient.MySqlException: Unable to connect to any of the specified MySQL hosts

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[MySqlException: Unable to connect to any of the specified MySQL hosts]
   MySql.Data.MySqlClient.NativeDriver.Open() +1226
   MySql.Data.MySqlClient.MySqlConnection.Open() +182
   www.swp.com.DataHelper.returnstr(String str) +165
   www.swp.com.PaperInfo.Update_PDF_download(String sPaper_ID) +260
   www.swp.com.CountdownloadPDF1.Page_Load(Object sender, EventArgs e) +349
   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:4.7.3930.0