Sunday, January 25, 2009

Restrict Multiple Instance of Visual Basic Application

How to Prevent Visual Basic Exe being executed multiple times

At times we set/reset registry settings / environment variables as part of the program logic. If another instance of the application uses this concurrently it would become a mess. The best is to prevent the application from being loaded for the second time. The easy way to do is to use App.PrevInstance method as shown below.

If App.PrevInstance = True Then

MsgBox "An instance of this tool is running in this machine! Requested instance will terminated", vbExclamation

Exit Sub

End If

No comments:

Post a Comment

StumbleUpon
Share on Facebook
Related Posts Plugin for WordPress, Blogger...

Visual Basic for Applications (VBA) Forum (recent threads)

CodeKeep VBA Feed

Visual Studio Tools for Office Forum (recent threads)

Download Windows Live Toolbar and personalize your Web experience! Add custom buttons to get the information you care about most.

Office Business Applications (OBA) Team Blog

MSDN Code Gallery Published Resources For Tag VSTO

microsoft.public.vsnet.vstools.office Google Group