在.NET 2.0 c#应用程序中,我使用以下代码来检测操作系统平台:
string os_platform = System.Environment.OSVersion.Platform.ToString();
返回“Win32NT”。问题是即使在Windows Vista 64位上运行,它也会返回“Win32NT”。
有没有其他方法来知道正确的平台(32位或64位)?
注意,当在Windows 64位上作为32位应用程序运行时,它也应该检测64位。
在.NET 2.0 c#应用程序中,我使用以下代码来检测操作系统平台:
string os_platform = System.Environment.OSVersion.Platform.ToString();
返回“Win32NT”。问题是即使在Windows Vista 64位上运行,它也会返回“Win32NT”。
有没有其他方法来知道正确的平台(32位或64位)?
注意,当在Windows 64位上作为32位应用程序运行时,它也应该检测64位。
当前回答
享受;-)
Function Is64Bit() As Boolean
Return My.Computer.FileSystem.SpecialDirectories.ProgramFiles.Contains("Program Files (x86)")
End Function
其他回答
下面是Windows管理规范(WMI)方法:
string _osVersion = "";
string _osServicePack = "";
string _osArchitecture = "";
ManagementObjectSearcher searcher = new ManagementObjectSearcher("select * from Win32_OperatingSystem");
ManagementObjectCollection collection = searcher.Get();
foreach (ManagementObject mbo in collection)
{
_osVersion = mbo.GetPropertyValue("Caption").ToString();
_osServicePack = string.Format("{0}.{1}", mbo.GetPropertyValue("ServicePackMajorVersion").ToString(), mbo.GetPropertyValue("ServicePackMinorVersion").ToString());
try
{
_osArchitecture = mbo.GetPropertyValue("OSArchitecture").ToString();
}
catch
{
// OSArchitecture only supported on Windows 7/Windows Server 2008
}
}
Console.WriteLine("osVersion : " + _osVersion);
Console.WriteLine("osServicePack : " + _osServicePack);
Console.WriteLine("osArchitecture: " + _osArchitecture);
/////////////////////////////////////////
// Test on Windows 7 64-bit
//
// osVersion : Microsoft Windows 7 Professional
// osservicePack : 1.0
// osArchitecture: 64-bit
/////////////////////////////////////////
// Test on Windows Server 2008 64-bit
// --The extra r's come from the registered trademark
//
// osVersion : Microsoftr Windows Serverr 2008 Standard
// osServicePack : 1.0
// osArchitecture: 64-bit
/////////////////////////////////////////
// Test on Windows Server 2003 32-bit
// --OSArchitecture property not supported on W2K3
//
// osVersion : Microsoft(R) Windows(R) Server 2003, Standard Edition
// osServicePack : 2.0
// osArchitecture:
下面是c#中使用DllImport的直接方法。
[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool IsWow64Process([In] IntPtr hProcess, [Out] out bool lpSystemInfo);
public static bool Is64Bit()
{
bool retVal;
IsWow64Process(Process.GetCurrentProcess().Handle, out retVal);
return retVal;
}
来自Chriz Yuen的博客
介绍了两个新的环境属性 Environment.Is64BitOperatingSystem; Environment.Is64BitProcess;
当你使用这两种属性时请小心。 在Windows 7 64位机器上测试
//Workspace: Target Platform x86
Environment.Is64BitOperatingSystem True
Environment.Is64BitProcess False
//Workspace: Target Platform x64
Environment.Is64BitOperatingSystem True
Environment.Is64BitProcess True
//Workspace: Target Platform Any
Environment.Is64BitOperatingSystem True
Environment.Is64BitProcess True
完整的答案是这样的(摘自stefan-mg, ripper234和BobbyShaftoe的答案):
[DllImport("kernel32.dll", SetLastError = true, CallingConvention = CallingConvention.Winapi)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool IsWow64Process([In] IntPtr hProcess, [Out] out bool lpSystemInfo);
private bool Is64Bit()
{
if (IntPtr.Size == 8 || (IntPtr.Size == 4 && Is32BitProcessOn64BitProcessor()))
{
return true;
}
else
{
return false;
}
}
private bool Is32BitProcessOn64BitProcessor()
{
bool retVal;
IsWow64Process(Process.GetCurrentProcess().Handle, out retVal);
return retVal;
}
首先检查您是否处于64位进程中。如果不是,检查32位进程是否是Wow64Process。
使用以下两个环境变量(伪代码):
if (PROCESSOR_ARCHITECTURE = x86 &&
isDefined(PROCESSOR_ARCHITEW6432) &&
PROCESSOR_ARCHITEW6432 = AMD64) {
//64 bit OS
}
else
if (PROCESSOR_ARCHITECTURE = AMD64) {
//64 bit OS
}
else
if (PROCESSOR_ARCHITECTURE = x86) {
//32 bit OS
}
请参阅博客文章HOWTO:检测进程bit。