C - How to get Program Files x86 on Windows 64 bit

Question

I m using   FileInfo      System Environment GetFolderPath          System Environment SpecialFolder ProgramFiles            MyInstalledApp    In order to determine if a program is detected on a users machine  it s not ideal  but the program I m looking for is a right old kludge of a MS-DOS application  and I couldn t think of another method    On Windows XP and 32-bit versions of Windows Vista this works fine  However  on x64 Windows Vista the code returns the x64 Program Files folder  whereas the application is installed in Program Files x86  Is there a way to programatically return the path to Program Files x86 without hard wiring  C  Program Files  x86

User · Accepted Answer

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    nbsp   static string ProgramFilesx86         if  8    IntPtr Size               String IsNullOrEmpty Environment GetEnvironmentVariable  PROCESSOR ARCHITEW6432                    return Environment GetEnvironmentVariable  ProgramFiles x86                return Environment GetEnvironmentVariable  ProgramFiles

User · Answer

One way would be to look for the  ProgramFiles x86   environment variable   String x86folder   Environment GetEnvironmentVariable  ProgramFiles x86

User · Answer

I am writing an application which can run on both x86 and x64 platform for Windows nbsp 7 and querying the below variable just pulls the right program files folder path on any platform   Environment GetEnvironmentVariable  PROGRAMFILES

User · Answer

C  Code  Environment GetFolderPath Environment SpecialFolder ProgramFilesX86  Output  C  Program Files  x86  Note  We need to tell the compiler to not prefer a particular build platform  Go to Visual Studio  gt  Project Properties  gt  Build  gt  Uncheck  quot Prefer 32 bit quot   Reason   By default for most  NET Projects is  quot Any CPU 32-bit preferred quot  When you uncheck 32 bit assembly will  JIT to 32-bit code on 32 bit process JIT to 32-bit code on 64 bit process

User · Answer

Note  however  that the ProgramFiles x86  environment variable is only available if your application is running 64-bit   If your application is running 32-bit  you can just use the ProgramFiles environment variable whose value will actually be  Program Files  x86

User · Answer

I am writing an application which can run on both x86 and x64 platform for Windows nbsp 7 and querying the below variable just pulls the right program files folder path on any platform   Environment GetEnvironmentVariable  PROGRAMFILES

User · Answer

Note  however  that the ProgramFiles x86  environment variable is only available if your application is running 64-bit   If your application is running 32-bit  you can just use the ProgramFiles environment variable whose value will actually be  Program Files  x86

User · Answer

One way would be to look for the  ProgramFiles x86   environment variable   String x86folder   Environment GetEnvironmentVariable  ProgramFiles x86

User · Answer

Note  however  that the ProgramFiles x86  environment variable is only available if your application is running 64-bit   If your application is running 32-bit  you can just use the ProgramFiles environment variable whose value will actually be  Program Files  x86

User · Answer

If you re using  NET 4  there is a special folder enumeration ProgramFilesX86   Environment GetFolderPath Environment SpecialFolder ProgramFilesX86

User · Answer

C  Code  Environment GetFolderPath Environment SpecialFolder ProgramFilesX86  Output  C  Program Files  x86  Note  We need to tell the compiler to not prefer a particular build platform  Go to Visual Studio  gt  Project Properties  gt  Build  gt  Uncheck  quot Prefer 32 bit quot   Reason   By default for most  NET Projects is  quot Any CPU 32-bit preferred quot  When you uncheck 32 bit assembly will  JIT to 32-bit code on 32 bit process JIT to 32-bit code on 64 bit process

User · Answer

Environment GetEnvironmentVariable  PROGRAMFILES X86       Environment GetFolderPath Environment SpecialFolder ProgramFiles

User · Answer

One-liner using the new method in  NET  Will always return x86 Program Files folder   Environment Is64BitOperatingSystem   Environment GetEnvironmentVariable  ProgramFiles x86      Environment GetEnvironmentVariable  ProgramFiles

User · Answer

One way would be to look for the  ProgramFiles x86   environment variable   String x86folder   Environment GetEnvironmentVariable  ProgramFiles x86

User · Answer

Environment GetEnvironmentVariable  PROGRAMFILES X86       Environment GetFolderPath Environment SpecialFolder ProgramFiles

User · Answer

If you re using  NET 4  there is a special folder enumeration ProgramFilesX86   Environment GetFolderPath Environment SpecialFolder ProgramFilesX86

User · Answer

One way would be to look for the  ProgramFiles x86   environment variable   String x86folder   Environment GetEnvironmentVariable  ProgramFiles x86

User · Answer

Note  however  that the ProgramFiles x86  environment variable is only available if your application is running 64-bit   If your application is running 32-bit  you can just use the ProgramFiles environment variable whose value will actually be  Program Files  x86

User · Answer

One-liner using the new method in  NET  Will always return x86 Program Files folder   Environment Is64BitOperatingSystem   Environment GetEnvironmentVariable  ProgramFiles x86      Environment GetEnvironmentVariable  ProgramFiles

[c#] C# - How to get Program Files (x86) on Windows 64 bit

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