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？

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中作为任何CPU编译)是作为32位还是64位应用程序运行?

5 个解决方案

#1

if (IntPtr.Size == 8) 
{
    // 64 bit machine
} 
else if (IntPtr.Size == 4) 
{
    // 32 bit machine
}

#2

137

If you're using .NET 4.0, it's a one-liner for the current process:

如果您使用的是.NET 4.0,那么它就是当前流程的单行程序:

Environment.Is64BitProcess

Reference: Environment.Is64BitProcess Property (MSDN)

参考:Environment.Is64BitProcess属性(MSDN)

#3

I found this code from Martijn Boven that does the trick:

我发现Martijn Boven的这个代码可以解决这个问题:

public static bool Is64BitMode() {
    return System.Runtime.InteropServices.Marshal.SizeOf(typeof(IntPtr)) == 8;
}

#4

This code sample from Microsoft All-In-One Code Framework can answer your question:

Microsoft All-In-One Code Framework中的此代码示例可以回答您的问题:

Detect the process running platform in C# (CSPlatformDetector)

在C#中检测进程运行平台(CSPlatformDetector)

The CSPlatformDetector code sample demonstrates the following tasks related to platform detection:

CSPlatformDetector代码示例演示了与平台检测相关的以下任务:

Detect the name of the current operating system. (e.g. "Microsoft Windows 7 Enterprise")

检测当前操作系统的名称。 (例如“Microsoft Windows 7 Enterprise”)

Detect the version of the current operating system. (e.g. "Microsoft Windows NT 6.1.7600.0")

检测当前操作系统的版本。 (例如“Microsoft Windows NT 6.1.7600.0”)

Determine whether the current operating system is a 64-bit operating system.

确定当前操作系统是否为64位操作系统。

Determine whether the current process is a 64-bit process.

确定当前进程是否为64位进程。

Determine whether an arbitrary process running on the system is 64-bit.

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.Is64BitProcess property that is new in .NET Framework 4.

如果您只想确定当前正在运行的进程是否为64位进程,则可以使用.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:

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OS位数,如果是64位,则使用目标进程句柄调用IsWow64Process():

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;
}

#5

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

#1

if (IntPtr.Size == 8) 
{
    // 64 bit machine
} 
else if (IntPtr.Size == 4) 
{
    // 32 bit machine
}

#2

137