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File Types in Deployment Project - "Open With" list

I have encountered the same problem another posted about several
ago. Unfortunately, there was no result posted on the old thread. I
will let the original message text stand and ask if anyone can help me
with this..

"I have created a deployment project for a .NET program which opens a
file with a custom extension. I have added the file type to the
deployment project. After installation, double clicking a file with
that extension opens it correctly. It also displays with the correct
icon. However, when I right click in Explorer to display the "Open
With" list, the icon for my program appears, but not the name. This
looks really messy. "

Is there a way, either through registry edit or through the Setup
Project to correct this issue?

Many thanks,

Paul Sullivan
Systems Programmer
Digital Library Center
University of Florida Libraries
Aug 29 '06 #1
1 2657
Hi Paul,

Based on your description, the problem is your installed application's name
doesn't appear in the target file's context menu's "Open With" list. Please
correct me if I misunderstand anything.

To add an application to a certain type file's open with list, first you
need to add a corresponding key for that application under the
HKEY_CLASSES_ROOT\Applications, for example:

(Default) REG_SZ
"D:\Demo\MyProgram.exe" "%1"
Then add that application key to the target file extension's
"OpenWithList"sub key under the HKEY_CLASSES_ROOT, for example:

I suggest you can test this in your development machine first, and ensure
it works. Then export the above 2 registry keys as .reg file and import
them to your application's setup project Registry editor. The
HKEY_CLASSES_ROOT\Applications\shell\open\command key's default value
should be modified as the following:

"[TARGETDIR]\MyProgram.exe" "%1"
Wish it works!

Best regards,

Gary Chang
Microsoft Online Community Support
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Aug 29 '06 #2

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