Server Error in '/' Application.

The connection name 'ProfessorsDBConnectionString' was not found in the applications configuration or the connection string is empty.

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: The connection name 'ProfessorsDBConnectionString' was not found in the applications configuration or the connection string is empty.

Source Error:

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

  <%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
   <system.web>
       <compilation debug="true"/>
   </system.web>
</configuration>

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

Stack Trace:


[InvalidOperationException: The connection name 'ProfessorsDBConnectionString' was not found in the applications configuration or the connection string is empty.]
   System.Web.Compilation.ConnectionStringsExpressionBuilder.GetConnectionString(String connectionStringName) +192
   ASP.professorstats_ascx.__BuildControlSqlDataSourceOverallQuality() +259
   ASP.professorstats_ascx.__BuildControlPanelStats() +837
   ASP.professorstats_ascx.__BuildControlProfessorStatsDiv() +250
   ASP.professorstats_ascx.__BuildControlTree(professorstats_ascx __ctrl) +139
   ASP.professorview_ascx.__BuildControlProfessorStats1() +83
   ASP.professorview_ascx.__BuildControlTree(professorview_ascx __ctrl) +6321
   ASP.doctordetails_aspx.__BuildControlProfessorView1() +83
   ASP.doctordetails_aspx.__BuildControlContent1(Control __ctrl) +289
   System.Web.UI.MasterPage.InstantiateInContentPlaceHolder(Control contentPlaceHolder, ITemplate template) +112
   ASP.masterpage_master.__BuildControlContentPlaceHolder1() +191
   ASP.masterpage_master.__BuildControl__control2(Control __ctrl) +139
   System.Web.UI.UpdatePanel.CreateContents() +111
   System.Web.UI.UpdatePanel.set_ContentTemplate(ITemplate value) +69
   ASP.masterpage_master.__BuildControlUpdatePanel3() +154
   ASP.masterpage_master.__BuildControlContent2(Control __ctrl) +296
   System.Web.UI.MasterPage.InstantiateInContentPlaceHolder(Control contentPlaceHolder, ITemplate template) +112
   ASP.masterpagefull_master.__BuildControlContentPlaceHolderContent() +191
   ASP.masterpagefull_master.__BuildControl__control25(Control __ctrl) +139
   System.Web.UI.UpdatePanel.CreateContents() +111
   System.Web.UI.UpdatePanel.set_ContentTemplate(ITemplate value) +69
   ASP.masterpagefull_master.__BuildControlUpdatePanel2() +143
   ASP.masterpagefull_master.__BuildControlform1() +304
   ASP.masterpagefull_master.__BuildControlTree(masterpagefull_master __ctrl) +289
   System.Web.UI.MasterPage.CreateMaster(TemplateControl owner, HttpContext context, VirtualPath masterPageFile, IDictionary contentTemplateCollection) +1305
   System.Web.UI.MasterPage.get_Master() +65
   System.Web.UI.MasterPage.ApplyMasterRecursive(MasterPage master, IList appliedMasterFilePaths) +23
   System.Web.UI.Page.ApplyMasterPage() +155
   System.Web.UI.Page.PerformPreInit() +62
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1178


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0