Programmatically retrieve Visual Studio install directory

Question

I know there is a registry key indicating the install directory, but I don't remember what it is off-hand.

I am currently interested in Visual Studio 2008 install directory, though it wouldn't hurt to list others for future reference.

Answer 1

I use this method to find the installation path of Visual Studio 2010:

    private string GetVisualStudioInstallationPath()     {         string installationPath = null;         if (Environment.Is64BitOperatingSystem)         {             installationPath = (string)Registry.GetValue(                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\VisualStudio\\10.0\\",                 "InstallDir",                 null);         }         else         {             installationPath = (string)Registry.GetValue(        "HKEY_LOCAL_MACHINE\\SOFTWARE  \\Microsoft\\VisualStudio\\10.0\\",               "InstallDir",               null);         }         return installationPath;      }