Schlagwort: Is64BitOperatingSystem

Folgende Klasse bestimmt die Plattform auf welcher der akt. Prozess ausgeführt wird.

using System;

/// <summary>
/// freeware helper class for getting platform info
/// (W) 2011 by admin of codezentrale.de
/// </summary>
public static class PlatFormDetect
{
    private const string sX86 = "x86";
    private const string sAMD64 = "AMD64";

    public enum EPlatformType
    {
        Unknown,
        Native32Bit, // 32Bit process on 32Bit OS
        Native64Bit, // 64Bit process on 64Bit OS
        WOW64        // 32Bit process on 64Bit OS
    }

    /// <summary>
    /// returns the current platform type
    /// </summary>
    public static EPlatformType PlatformType
    {
        get
        {
            EPlatformType ePT = EPlatformType.Unknown;

            // get native process bitness
            // x86   - 32bit native AND WOW64
            // AMD64 - 64bit native
            string sArchitecture = Environment.GetEnvironmentVariable("PROCESSOR_ARCHITECTURE", EnvironmentVariableTarget.Machine);
            // get original CPU architecture
            // undefined (null) == 32Bit
            //            AMD64 == 64Bit
            string sArchitectureW6432 = Environment.GetEnvironmentVariable("PROCESSOR_ARCHITEW6432", EnvironmentVariableTarget.Machine);

            // 32Bit process on 32Bit OS
            if ((sArchitecture == sX86) && string.IsNullOrEmpty(sArchitectureW6432)) ePT = EPlatformType.Native32Bit;
            // 64Bit process on 64Bit OS
            if ((sArchitecture == sAMD64) && string.IsNullOrEmpty(sArchitectureW6432)) ePT = EPlatformType.Native64Bit;
            // 32Bit process on 64Bit OS
            if ((sArchitecture == sX86) && (sArchitectureW6432 == sAMD64)) ePT = EPlatformType.WOW64;

            return ePT;
        }
    }
}

• Weiterführende Links: HOWTO: Detect Process Bitness

Ab .NET-Framework 4.0 stehen die Funktionen Environment.Is64BitProcess und Environment.Is64BitOperatingSystem zur Verfügung.

using System;

// helper class for getting platform info
// (W) 2010 by admin of codezentrale.de
public static class PlatFormDetect4
{
    private const string s32Bit = "32Bit";
    private const string s64Bit = "64Bit";

    /// <summary>
    /// prints the OS bitness
    /// </summary>
    /// <returns>OS bitness</returns>
    public static string OSBitness
    {
        get
        {
            return Environment.Is64BitOperatingSystem ? s64Bit : s32Bit;
        }
    }
    /// <summary>
    /// prints the process bitness
    /// </summary>
    /// <returns>process bitness</returns>
    public static string ProcessBitness
    {
        get
        {
            return Environment.Is64BitProcess ? s64Bit : s32Bit;
        }
    }
}