C# 如何判断我的应用程序是作为 32 位还是 64 位应用程序运行？
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How do I tell if my application is running as a 32-bit or 64-bit application?
提问by Lawrence Johnston
How do I tell if my application (compiled in Visual Studio 2008 as Any CPU) is running as a 32-bit or 64-bit application?
如何判断我的应用程序（在 Visual Studio 2008 中编译为Any CPU）是作为 32 位应用程序还是 64 位应用程序运行？
采纳答案by Perica Zivkovic
if (IntPtr.Size == 8)
{
// 64 bit machine
}
else if (IntPtr.Size == 4)
{
// 32 bit machine
}
回答by Lawrence Johnston
I found this code from Martijn Boventhat does the trick:
我从Martijn Boven找到了这段代码，它可以解决问题：
public static bool Is64BitMode() {
return System.Runtime.InteropServices.Marshal.SizeOf(typeof(IntPtr)) == 8;
}
回答by Sam
If you're using .NET4.0, it's a one-liner for the current process:
如果您使用.NET4.0，则它是当前进程的单行：
Environment.Is64BitProcess
Reference: Environment.Is64BitProcess Property (MSDN)
参考：Environment.Is64BitProcess 属性（MSDN）
回答by Scott Ge
This code sample from Microsoft All-In-One Code Framework can answer your question:
来自 Microsoft All-In-One Code Framework 的此代码示例可以回答您的问题：
Detect the process running platform in C# (CSPlatformDetector)
C#中检测进程运行平台（CSPlatformDetector）
The CSPlatformDetector code sample demonstrates the following tasks related to platform detection:
- Detect the name of the current operating system. (e.g. "Microsoft Windows 7 Enterprise")
- Detect the version of the current operating system. (e.g. "Microsoft Windows NT 6.1.7600.0")
- Determine whether the current operating system is a 64-bit operating system.
- Determine whether the current process is a 64-bit process.
- Determine whether an arbitrary process running on the system is 64-bit.
CSPlatformDetector 代码示例演示了以下与平台检测相关的任务：
- 检测当前操作系统的名称。 （例如“Microsoft Windows 7 企业版”）
- 检测当前操作系统的版本。 （例如“Microsoft Windows NT 6.1.7600.0”）
- 判断当前操作系统是否为64位操作系统。
- 判断当前进程是否为64位进程。
- 确定系统上运行的任意进程是否为 64 位。
If you just want to determine whether the currently running process is a 64-bit process, you can use the Environment.Is64BitProcessproperty that is new in .NET Framework 4.
如果只想确定当前运行的进程是否为 64 位进程，可以使用.NET Framework 4 中新增的Environment.Is64BitProcess属性。
And if you want to detect whether an arbitrary application running on the system
is a 64-bit process, you need to determine the OS bitness, and if it is 64-bit,
call IsWow64Process()with the target process handle:
并且如果要检测系统上运行的任意应用程序是否为64位进程，则需要确定操作系统位数，如果是64位，则IsWow64Process()使用目标进程句柄调用：
static bool Is64BitProcess(IntPtr hProcess)
{
bool flag = false;
if (Environment.Is64BitOperatingSystem)
{
// On 64-bit OS, if a process is not running under Wow64 mode,
// the process must be a 64-bit process.
flag = !(NativeMethods.IsWow64Process(hProcess, out flag) && flag);
}
return flag;
}
回答by Owen Pauling
In .Net Standard you can use System.Runtime.InteropServices.RuntimeInformation.OSArchitecture
在 .Net Standard 中，您可以使用 System.Runtime.InteropServices.RuntimeInformation.OSArchitecture
