C#判断当前系统是32位还是64位

C#判断当前系统是32位还是64位

// The initial C# code for the "plain" WMI query was generated by WMI Code Generator, Version 5.00, http://www.robvanderwoude.com/wmigen.php
using System;
using System.Management;
using System.Collections.Generic;
namespace Win32_Processor_Query
{
	public class WMIQuery
	{
		public static int Main(string[] args)
		{
			string fullpath = Environment.GetCommandLineArgs().GetValue(0).ToString();
			string[] program = fullpath.Split('\\');
			string exename = program[program.GetUpperBound(0)];
			exename = exename.Substring(0, exename.IndexOf('.'));
			if (args.Length > 0)
			{
				Console.OpenStandardError();
				Console.WriteLine();
				Console.WriteLine(exename + ",  Version 1.00");
				Console.WriteLine("Detect if running in a 32-bit or 64-bit OS");
				Console.WriteLine();
				Console.WriteLine("Usage:  " + exename.ToUpper() + "  [ computername ]");
				Console.WriteLine();
				Console.WriteLine("Where:  \"computername\"  is the (optional) name of a remote computer");
				Console.WriteLine("                        (default if not specified: local computer)");
				Console.WriteLine();
				Console.WriteLine("Note:   Return value (\"ErrorLevel\") 32 or 64 equals OS value");
				Console.WriteLine();
				Console.WriteLine("Written by Rob van der Woude");
				Console.WriteLine("http://www.robvanderwoude.com");
				Console.OpenStandardOutput();
				return 1;
			}
			try
			{
				string wmins = "root\\CIMV2";
				if (args.Length == 1)
				{
					wmins = "\\\\" + args[0] + "\\" + wmins;
				}
				UInt16 addresswidth = 0;
				ManagementObjectSearcher searcher = new ManagementObjectSearcher(wmins, "SELECT * FROM Win32_Processor");
				foreach (ManagementObject queryObj in searcher.Get())
				{
					addresswidth = (UInt16) (queryObj["AddressWidth"]);
					Console.WriteLine("Windows   : {0}-bit", addresswidth);
					Console.WriteLine("Processor : {0}-bit", queryObj["DataWidth"]);
				}
				return addresswidth;
			}
			catch (Exception e)
			{
				Console.OpenStandardError();
				Console.WriteLine("Error: " + e.Message);
				Console.WriteLine();
				Console.WriteLine("For detailed help, run: " + exename + " /?");
				Console.OpenStandardOutput();
				return 1;
			}
		}
	}
}