C#实现WCE获取设备信息：GetDeviceID函数

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Text;

namespace DeviceID
{
    /// <summary>
    /// Summary description for DeviceID.
    /// </summary>
    public class DeviceID : System.Windows.Forms.Form
    {

    public DeviceID()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>

        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            base.Dispose( disposing );
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            // 
            // DeviceID
            // 
            this.Text = "DeviceID";
            this.Load += new System.EventHandler(this.DeviceID_Load);

        }
        static void Main() 
        {
            Application.Run(new DeviceID());
        }
        #endregion

        private static Int32 METHOD_BUFFERED = 0;
        private static Int32 FILE_ANY_ACCESS = 0;
        private static Int32 FILE_DEVICE_HAL = 0x00000101;