Locate program path

Question

I have a C# application that I want to call another program from. My problem is that the program I want to call may be installed in one of several locations on each user's PC. Is there an easy way for me to determine the applications path? I am thinking that I can have my application look in the registry but I have not done this before. Any help is appreciated!

crausch · Answer

OK... with a little more research I found my answer -------------------------------- using Microsoft.Win32; string myPath = ; RegistryKey rk = Registry.LocalMachine.OpenSubKey(SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\SomeProg.exe false); if(rk != null) { myPath = rk.GetValue().ToString(); } ------------------------------------ In the code above I am getting the Default value which contains the programs executable path. The false parameter says that I want to open the key as read-only. I am not sure if the rk != null check is the right way to check that the key existed but at first test this appears to work.