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C#, updating installed app with the Windows Installer

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Join Date: Oct 2009

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educated_fool educated_fool is offline

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C#, updating installed app with the Windows Installer

Oct 18th, 2009

Hello, dear All

I have the following problem: i have a .net (C#) app and a Windows Installer project to deploy it. Now i want this Installer project be able not just to install the app onto a 'bare' client machine, but also to check if some previous version of the app has been already installed and update it if necessary.
At first glance, this problem seems as very common and easy to find solution for, but, surprisingly, Google says nothing about it. If somebody knows at least where to look for a solution - i'ld be very grateful for a help.

Last edited by educated_fool; Oct 18th, 2009 at 9:39 am.

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sknake

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Oct 18th, 2009

Click on the installer in your solution explorer and look in the properties window. Set these properties:
DetectNewerInstalledVersion = True
RemovePreviousVersions = True

That will allow you to upgrade machines and stop accidental downgrades.

Scott Knake
Custom Software Development
Apex Software, Inc.