Abort Startup, when Error occurs in Me.Startup

Abort Startup, when Error occurs in Me.Startup

• John Mark

  e.Cancel is the preferred method for preventing the application from starting. Why doesnt this work for you
  
  

• muk2cl

  Huy Nguyen from the VB team helped to find a solution in another thread. The solution is simple... and makes sense. It helps to keep in mind that SplashScreen is shown on a different thread.

  To abort in MyApplication_Startup do this:

  If Not Me.SplashScreen Is Nothing Then
  While Not Me.SplashScreen.IsHandleCreated
  System.Threading.Thread.Sleep(100)
  End While
  Me.HideSplashScreen()
  End If
  e.Cancel = True

  
  
  

• genio

  I did find another way to do it, but you have to turn off one of the ThreadChecking monitors.... but since you are exiting the program....

   

          Private Sub MyApplication_Startup(ByVal sender As Object, ByVal e As Microsoft.VisualBasic.ApplicationServices.StartupEventArgs) Handles Me.Startup
              Try
                  ' Startup Code
              Catch ex As Exception
                  e.Cancel = True
              End Try

              If e.Cancel = True Then
                  Control.CheckForIllegalCrossThreadCalls = False
                  My.Application.SplashScreen.Close()
              End If
          End Sub

  
  

• adamscabana

  After I set e.Cancel = True; the Startup SplashScreen stays up.

  I take it that I must specifically close the Startup SplashScreen then....

  (Yesterday was a long day, and I have been missing the obvious stuff)

  
  

• perryf

  I'm getting this same problem. Closing the startup form doesn't work. The application still hangs. e.Cancel only seems to work when you don't have a SplashScreen set at all. Is this a bug
  
  

• Armadillo

  I think the IsHandledCreated + HideSplashScreen() is way more elegant. ;-)
  
  
• Abort Startup, when Error occurs in Me.Startup