program files dir with with Windows 7 using .net

I'm testing some of my software to make sure it works with Windows 7.  My current software uses a command like:

Process.Start("C:\Program Files\myapp\myapp.exe", "test", pwd, "mydomain")

I can I code this to work with both XP and Windows 7.  Currently it fails on Windows 7 because it's looking in the x86 folder.
chadmanvbAsked:
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BuggyCoderCommented:
use this:-

if File.Exists(@"C:\Program Files\myapp\myapp.exe")
{
Process.Start(@"C:\Program Files\myapp\myapp.exe", "test", pwd, "mydomain")
}
else
{
Process.Start(@"other path", "test", pwd, "mydomain")
}

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PaulHewsCommented:
In .NET 4.0 you can do this:

Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86)

In previous versions:
VS2008-2010
Dim path As String = If(Environment.GetEnvironmentVariable("ProgramFiles(x86)"), Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles))

Open in new window


VS2005
       
Dim path As String = If(Environment.GetEnvironmentVariable("ProgramFiles(x86)") Is Nothing, _
                                Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), _
                                Environment.GetEnvironmentVariable("ProgramFiles(x86)"))

Open in new window

BuggyCoderCommented:
well i thought i should share this as well, here is the code to tell you if you are running your app on 64 bit windows or not:-

http://stackoverflow.com/questions/336633/how-to-detect-windows-64-bit-platform-with-net

probably then you can decide to look for in program files(86) folder for you app.exe
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CodeCruiserCommented:
Another thing to keep in mind is that Win 7 wont allow your program to access program files folder unless its running in admin mode.
chadmanvbAuthor Commented:
This worked great.
PaulHewsCommented:
That will work as long as the user hasn't got Program Files folder set up on an alternate drive, like D:
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