使用C#获取操作系统版本号的四种方法

var os = Environment.OSVersion;
Console.WriteLine($"平台: {os.Platform}");         // Win32NT
Console.WriteLine($"主版本: {os.Version.Major}");  // 10（Win10/Win11 均为 10）
Console.WriteLine($"次版本: {os.Version.Minor}");  // 0（Win10/Win11 均为 0）
Console.WriteLine($"Build: {os.Version.Build}");    // 19044（Win10） / 22000（Win11）

using Microsoft.Win32;

int GetWinBuildNumber()
{
    using (RegistryKey key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows NT\CurrentVersion"))
    {
        return int.Parse(key.GetValue("CurrentBuildNumber").ToString());
    }
}

var build = GetWinBuildNumber();
if (build >= 22000)
    Console.WriteLine("Windows 11");
else
    Console.WriteLine("Windows 10");

using System.Management;

string GetOSName()
{
    var searcher = new ManagementObjectSearcher("SELECT Caption, BuildNumber FROM Win32_OperatingSystem");
    foreach (ManagementObject os in searcher.Get())
    {
        string caption = os["Caption"].ToString();
        int build = int.Parse(os["BuildNumber"].ToString());
        
        if (build >= 22000)
            return "Windows 11";
        else
            return "Windows 10";
    }
    return "Unknown";
}

Console.WriteLine(GetOSName());

Install-Package System.Management

using System.Runtime.InteropServices;

public static class WinAPI
{
 [DllImport("kernel32.dll")]
 private static extern ulong VerifyVersionInfoW(
 ref OSVERSIONINFOEX lpVersionInfo,
 uint dwTypeMask,
 ulong dwlConditionMask
 );

 [DllImport("kernel32.dll")]
 private static extern ulong VerSetConditionMask(
 ulong dwlConditionMask,
 uint dwTypeBit,
 uint dwConditionMask
 );

 [StructLayout(LayoutKind.Sequential)]
 private struct OSVERSIONINFOEX
 {
 public uint dwOSVersionInfoSize;
 public uint dwMajorVersion;
 public uint dwMinorVersion;
 public uint dwBuildNumber;
 public uint dwPlatformId;
 [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
 public string szCSDVersion;
 public ushort wServicePackMajor;
 public ushort wServicePackMinor;
 public ushort wSuiteMask;
 public byte wProductType;
 public byte wReserved;
 }

 public static bool IsWindows11OrGreater()
 {
 const uint VER_MAJORVERSION = 0x0000002;
 const uint VER_MINORVERSION = 0x0000001;
 const uint VER_BUILDNUMBER = 0x0000004;
 const uint VER_GREATER_EQUAL = 0x3;

 ulong conditionMask = 0;
 conditionMask = VerSetConditionMask(conditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
 conditionMask = VerSetConditionMask(conditionMask, VER_MINORverbsion, VER_GREATER_EQUAL);
 conditionMask = VerSetConditionMask(conditionMask, VER_BUILDNUMBER, VER_GREATER_EQUAL);

 OSVERSIONINFOEX versionInfo = new OSVERSIONINFOEX();
 versionInfo.dwOSVersionInfoSize = (uint)Marshal.SizeOf(versionInfo);
 versionInfo.dwMajorVersion = 10;
 versionInfo.dwMinorVersion = 0;
 versionInfo.dwBuildNumber = 22000; // Windows 11 ≥ 22000

 return VerifyVersionInfoW(ref versionInfo, VER_MAJORVERSION | VER_MINORVERSION | VER_BUILDNUMBER, conditionMask) != 0;
 }
}

// 调用
bool isWin11 = WinAPI.IsWindows11OrGreater();
Console.WriteLine(isWin11 ? "Windows 11" : "Windows 10");

int build = GetWinBuildNumber(); // 方法2
Console.WriteLine(build >= 22000 ? "Windows 11" : "Windows 10");