How to compile C# Application for both 32 bit and 64 bit system?

I have faced this problem when one of my client try to run SMS Suit software in Windows 7 64 bit. Previously it is working perfectly in vista and windows xp 32 bit . After searching online I have found lots of solutions on it now I want to share these with you...

Solution :1

You can edit your visual studio c# project file (.csproj) and put this snippet:
1.<PlatformTarget> x86 </PlatformTarget>

inside

2.<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">


Solution :2(Command-line form)
Using CorFlags to set the 32BIT flag on the executable. E.g:
corflags.exe myapp.exe /32BIT+

This will modify your exe, so you might wanna keep a backup just in case. You can also revert the flag using /32BIT- instead of /32BIT+.


Solution :3(Simplest way)
1.Right click your Project, and select Properties.
2.In properties, select the Build tab. Under Platform target, select x86.
3.Hit Ctrl+Shift+S to save all files, right click the Solution and select "Clean" to get rid of old binaries. Any builds after that should be 32 bit .
Now it is ready for both 32 bit and 64 bit OS.



This should solve the problem ! Please inform me if there is another better way.