wpfc#调用api获取系统版本

您可以使用以下代码调用API获取系统版本：

using System.Runtime.InteropServices;

[DllImport("kernel32.dll")]
static extern void GetVersionEx(ref OSVERSIONINFOEX osVersionInfo);

[StructLayout(LayoutKind.Sequential)]
public struct OSVERSIONINFOEX
{
    public int dwOSVersionInfoSize;
    public int dwMajorVersion;
    public int dwMinorVersion;
    public int dwBuildNumber;
    public int dwPlatformId;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 128)]
    public string szCSDVersion;
};

public static string GetWindowsVersion()
{
    OSVERSIONINFOEX osVersionInfo = new OSVERSIONINFOEX();
    osVersionInfo.dwOSVersionInfoSize = Marshal.SizeOf(typeof(OSVERSIONINFOEX));
    GetVersionEx(ref osVersionInfo);

    string version = string.Format("{0}.{1}.{2}", osVersionInfo.dwMajorVersion, osVersionInfo.dwMinorVersion, osVersionInfo.dwBuildNumber);
    return version;
}

此代码段使用 `kernel32.dll` 中的 `GetVersionEx` 函数获取操作系统版本信息。如果您使用的是Windows操作系统，此代码应该可以正常工作。