[C#] [WMI] USB Detect 예제

* C# WMI 를 이용한 USB 연결 및 연결해제 예제...

- WMI 를 사용하기 위해 참조 -> System.Management dll 을 추가 -> 소스 코드 using System.Management

Main

 

- 사용한 컨트롤 : ListView 1개, Button 2개

 

전체 소스 코드

Form1.cs

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using System.Management;


namespace CSharp_WMI_USB_Detect
{
    public partial class Form1 : Form
    {
        ManagementEventWatcher mewWatcher;
        string strUSBDriveName;
        string strUSBDriveLetter;
        int iCount = 0;

        public Form1()
        {
            InitializeComponent();
            //크로스 스레드 
            CheckForIllegalCrossThreadCalls = false;
        }

        protected override void OnClosed(EventArgs e)
        {
            base.OnClosed(e);

            if (mewWatcher != null)
            {
                mewWatcher.Stop();
                mewWatcher.Dispose();
            }

        }

        void mewWatcher_EventArrived(object sender, System.Management.EventArrivedEventArgs e)
        {
            ManagementBaseObject mbo1;
            ManagementBaseObject mbo2;

            mbo1 = e.NewEvent as ManagementBaseObject;
            mbo2 = mbo1["TargetInstance"] as ManagementBaseObject;

            switch (mbo1.ClassPath.ClassName)
            {
                case "__InstanceCreationEvent":
                {
                    if (mbo2["InterfaceType"].ToString() == "USB")
                    {
                        strUSBDriveName = mbo2["Caption"].ToString();
                        strUSBDriveLetter = mbo2["Name"].ToString();

                        ListViewItem lvi = new ListViewItem();
                        lvi.Text = (iCount + 1).ToString();
                        lvi.SubItems.Add(strUSBDriveName + " : " + strUSBDriveLetter + " 연결 되었습니다.");

                        listView1.Items.Add(lvi);
                        iCount += 1;
                    }

                    break;
                }
                case "__InstanceDeletionEvent":
                {
                    if (mbo2["InterfaceType"].ToString() == "USB")
                    {
                        if (mbo2["Caption"].ToString() == strUSBDriveName)
                        {
                            ListViewItem lvi = new ListViewItem();
                            lvi.Text = (iCount + 1).ToString();
                            lvi.SubItems.Add(strUSBDriveName + " : " + strUSBDriveLetter + " 해제 되었습니다.");

                            listView1.Items.Add(lvi);
                            iCount += 1;

                            strUSBDriveLetter = "";
                            strUSBDriveName = "";
                        }
                    }

                    break;
                }
            }

            this.Refresh();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //start
            //ManageMentEventWatcher 가 null 이면 생성...
            if (mewWatcher == null) mewWatcher = new ManagementEventWatcher();

            WqlEventQuery weQuery = new WqlEventQuery("SELECT * FROM __InstanceOperationEvent WITHIN 1 " + "WHERE TargetInstance ISA 'Win32_DiskDrive'");
            mewWatcher.Query = weQuery;
            //Event Create
            mewWatcher.EventArrived += new EventArrivedEventHandler(mewWatcher_EventArrived);
            mewWatcher.Start();

        }

        private void button2_Click(object sender, EventArgs e)
        {
            //stop
            mewWatcher.Stop();
            mewWatcher.Dispose();
        }
    }
}

 

위 구문에서 보듯이 CheckfoCheckForIllegalCrossThreadCalls 를 사용 (크로스 스레드 예제 https://kdsoft-zeros.tistory.com/22 참조)

 

- 아래 클래스에 붉은색 표시 -> 소스코드에 사용한 필드 !!

 

[Dynamic, Provider("CIMWin32"), UUID("{8502C4B2-5FBB-11D2-AAC1-006008C78BC7}"), AMENDMENT]
class Win32_DiskDrive : CIM_DiskDrive
{
  uint16   Availability;
  uint32   BytesPerSector;
  uint16   Capabilities[];
  string   CapabilityDescriptions[];
  string   Caption;
  string   CompressionMethod;
  uint32   ConfigManagerErrorCode;
  boolean  ConfigManagerUserConfig;
  string   CreationClassName;
  uint64   DefaultBlockSize;
  string   Description;
  string   DeviceID;
  boolean  ErrorCleared;
  string   ErrorDescription;
  string   ErrorMethodology;
  string   FirmwareRevision;
  uint32   Index;
  datetime InstallDate;
  string   InterfaceType;
  uint32   LastErrorCode;
  string   Manufacturer;
  uint64   MaxBlockSize;
  uint64   MaxMediaSize;
  boolean  MediaLoaded;
  string   MediaType;
  uint64   MinBlockSize;
  string   Model;
  string   Name;
  boolean  NeedsCleaning;
  uint32   NumberOfMediaSupported;
  uint32   Partitions;
  string   PNPDeviceID;
  uint16   PowerManagementCapabilities[];
  boolean  PowerManagementSupported;
  uint32   SCSIBus;
  uint16   SCSILogicalUnit;
  uint16   SCSIPort;
  uint16   SCSITargetId;
  uint32   SectorsPerTrack;
  string   SerialNumber;
  uint32   Signature;
  uint64   Size;
  string   Status;
  uint16   StatusInfo;
  string   SystemCreationClassName;
  string   SystemName;
  uint64   TotalCylinders;
  uint32   TotalHeads;
  uint64   TotalSectors;
  uint64   TotalTracks;
  uint32   TracksPerCylinder;
};

 

 

*예제 결과

 

- 연결된 모습

 

-연결 해제된 모습

 

* 참조 (마이크로소프트)

https://docs.microsoft.com/en-us/windows/win32/cimwin32prov/win32-diskdrive

Win32_DiskDrive class - Win32 apps

 

https://kdsoft-zeros.tistory.com/182

[VBNET] [WMI] USB Detect 예제