BUG: SolutionEvents.BeforeClosing event raised with no solution loaded in Visual Studio 2005 add-ins

Author:	Carlos J. Quintero (Microsoft MVP)	Applies to:	Microsoft Visual Studio 2005
Date:	February 2007

Introduction

When using a macro or add-in in VS 2005 to capture the EnvDTE.SolutionEvents.BeforeClosing event of the extensibility model, the event is raised even when there is no solution loaded (and therefore there is no solution being closed).

Cause

This is a bug of Visual Studio 2005.

More Information

Steps to reproduce the problem:

• Open the Macros IDE, go to the EnvironmentEvents file and add this code:

  Sub SolutionEvents_AfterClosing() Handles SolutionEvents.AfterClosing
     MsgBox("SolutionEvents_AfterClosing")
  End Sub

  Private Sub SolutionEvents_BeforeClosing() Handles SolutionEvents.BeforeClosing
     If DTE.Solution.IsOpen Then
        MsgBox("SolutionEvents_BeforeClosing")
     Else
        MsgBox("BUG: there is no solution open to launch the BeforeClosing event")
     End If
  End Sub

• Go back to the main IDE and close the current loaded solution (if any). Load a solution from the Recent Projects menu. You get a SolutionEvents_BeforeClosing event when no solution was open, and therefore there is no solution to be closed. The event should not be raised in this case. This did not happen In VS.NET 2003.

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