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How to identify 32-bit and 64-bit ASP.NET?

I have an ASP.NET server that I do not have direct access to. How can I write a .NET application that will programmatically determine if ASP.NET is running a 32-bit version of a 64-bit version?

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3 answers

The easiest way is to do this:

Int32 addressWidth = IntPtr.Size * 8;

since it IntPtr.Sizeis 4 bytes in a 32-bit architecture and 8 bytes in a 64-bit architecture.

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PInvoke

, .

private enum Platform
{
    X86,
    X64,
    Unknown
}

internal const ushort PROCESSOR_ARCHITECTURE_INTEL = 0;
internal const ushort PROCESSOR_ARCHITECTURE_IA64 = 6;
internal const ushort PROCESSOR_ARCHITECTURE_AMD64 = 9;
internal const ushort PROCESSOR_ARCHITECTURE_UNKNOWN = 0xFFFF;

[StructLayout(LayoutKind.Sequential)]
internal struct SYSTEM_INFO
{
    public ushort wProcessorArchitecture;
    public ushort wReserved;
    public uint dwPageSize;
    public IntPtr lpMinimumApplicationAddress;
    public IntPtr lpMaximumApplicationAddress;
    public UIntPtr dwActiveProcessorMask;
    public uint dwNumberOfProcessors;
    public uint dwProcessorType;
    public uint dwAllocationGranularity;
    public ushort wProcessorLevel;
    public ushort wProcessorRevision;
};

[DllImport("kernel32.dll")]
internal static extern void GetNativeSystemInfo(ref SYSTEM_INFO lpSystemInfo);        

private static Platform GetPlatform()
{
    SYSTEM_INFO sysInfo = new SYSTEM_INFO();
    GetNativeSystemInfo(ref sysInfo);

    switch (sysInfo.wProcessorArchitecture)
    {
        case PROCESSOR_ARCHITECTURE_AMD64:
            return Platform.X64;

        case PROCESSOR_ARCHITECTURE_INTEL:
            return Platform.X86;

        default:
            return Platform.Unknown;
    }
}
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