C# - How to get Program Files (x86) on Windows 64 bit
The function below will return the x86 Program Files directory in all of these three Windows configurations:
- 32 bit Windows
- 32 bit program running on 64 bit Windows
- 64 bit program running on 64 bit windows
static string ProgramFilesx86(){ if( 8 == IntPtr.Size || (!String.IsNullOrEmpty(Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432")))) { return Environment.GetEnvironmentVariable("ProgramFiles(x86)"); } return Environment.GetEnvironmentVariable("ProgramFiles");}
If you're using .NET 4, there is a special folder enumeration ProgramFilesX86:
Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86)