Server Error in '/' Application.

Object cannot be cast from DBNull to other types.

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.InvalidCastException: Object cannot be cast from DBNull to other types.

Source Error:


Line 137:    {
Line 138:        cmd.Connection = con;
Line 139:        con.Open();
Line 140:        if (Request.QueryString.Count > 0 && Request.QueryString["id"] != null)
Line 141:        {

Source File: c:\inetpub\vhosts\alsaeedah.mochahosted.com\httpdocs\vote.aspx.cs    Line: 139

Stack Trace:


[InvalidCastException: Object cannot be cast from DBNull to other types.]
   System.DBNull.System.IConvertible.ToInt32(IFormatProvider provider) +55
   System.Convert.ToInt32(Object value, IFormatProvider provider) +33
   MySql.Data.MySqlClient.Driver.LoadCharacterSets() +288
   MySql.Data.MySqlClient.Driver.Configure(MySqlConnection conn) +346
   MySql.Data.MySqlClient.NativeDriver.Configure(MySqlConnection connection) +10
   MySql.Data.MySqlClient.MySqlConnection.Open() +384
   vote.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\alsaeedah.mochahosted.com\httpdocs\vote.aspx.cs:139
   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:4.8.4700.0