Server Error in '/haminanteinisirkus' Application.

The ConnectionString property has not been initialized.

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 ConnectionString property has not been initialized.

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:


[InvalidOperationException: The ConnectionString property has not been initialized.]
   System.Data.SqlClient.SqlConnection.PermissionDemand() +7146133
   System.Data.SqlClient.SqlConnectionFactory.PermissionDemand(DbConnection outerConnection) +30
   System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +312
   System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +202
   System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +413
   System.Data.SqlClient.SqlConnection.Open() +128
   JasTietokanta.JasTiedot.NewOpenConnection() in C:\Users\TM\Documents\Visual Studio 2017\Projects\NettiJäseri\JasTietokanta\JasTiedot.cs:35
   JasTietokanta.JasTiedot.LueAsetuksetRyhmaan(String ryhmanimi) in C:\Users\TM\Documents\Visual Studio 2017\Projects\NettiJäseri\JasTietokanta\JasTiedot.cs:1976
   JasTietokanta.JasTiedot.LueOhjausAsetukset() in C:\Users\TM\Documents\Visual Studio 2017\Projects\NettiJäseri\JasTietokanta\JasTiedot.cs:2578
   Ilmoittautuminen.Default.LuoLupavalinnat() in C:\Users\TM\Documents\Visual Studio 2017\Projects\NettiJäseri\Ilmoittautuminen\Default.aspx.cs:233
   Ilmoittautuminen.Default.Page_Load(Object sender, EventArgs e) in C:\Users\TM\Documents\Visual Studio 2017\Projects\NettiJäseri\Ilmoittautuminen\Default.aspx.cs:96
   System.Web.UI.Control.OnLoad(EventArgs e) +106
   System.Web.UI.Control.LoadRecursive() +68
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3785


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4087.0