Category: Programming

detect when a removable disk is inserted using C#

    	static ManagementEventWatcher w = null;
    	static void AddRemoveUSBHandler()
    	{
    		WqlEventQuery q;
    		ManagementScope scope = new ManagementScope("root\\CIMV2");
    		scope.Options.EnablePrivileges = true;
    		try {
    			q = new WqlEventQuery();
    			q.EventClassName = "__InstanceDeletionEvent";
    			q.WithinInterval = new TimeSpan(0, 0, 3);
    			q.Condition = "TargetInstance ISA 'Win32_USBControllerdevice'";
    			w = new ManagementEventWatcher(scope, q);
    			w.EventArrived += USBRemoved;
    			w.Start();
    		}
    		catch (Exception e) {
    			Console.WriteLine(e.Message);
    			if (w != null)
    			{
    				w.Stop();
    			}
    		}
    	}

    	static void AddInsertUSBHandler()
    	{
    		WqlEventQuery q;
    		ManagementScope scope = new ManagementScope("root\\CIMV2");
    		scope.Options.EnablePrivileges = true;
    		try {
    			q = new WqlEventQuery();
    			q.EventClassName = "__InstanceCreationEvent";
    			q.WithinInterval = new TimeSpan(0, 0, 3);
    			q.Condition = "TargetInstance ISA 'Win32_USBControllerdevice'";
    			w = new ManagementEventWatcher(scope, q);
    			w.EventArrived += USBInserted;
    			w.Start();
    		}
    		catch (Exception e) {
    			Console.WriteLine(e.Message);
    			if (w != null)
    			{
    				w.Stop();
    			}
    		}
    	}

    	static void USBInserted(object sender, EventArgs e)
    	{
    		Console.WriteLine("A USB device inserted");
    	}

    	static void USBRemoved(object sender, EventArgs e)
    	{
    		Console.WriteLine("A USB device removed");
    	}

How to use

    	Main()
    	{
    		AddInsertUSBHandler();
    		AddRemoveUSBHandler();
    		while (true) {}
    	}

http://stackoverflow.com/a/271251

Answer:How do I detect when a removable disk is inserted using C#? https://t.co/cZVNYSF9Ej

— ศรรามไงจะใครล่ะ❤️ (@sornram9254) June 3, 2016

Answer:WMI: Get USB device description on insertion

        ManagementScope sc =
            new ManagementScope(@"\\YOURCOMPUTERNAME\root\cimv2");

        ObjectQuery query =
            new ObjectQuery("Select * from Win32_USBHub");

        ManagementObjectSearcher searcher = new ManagementObjectSearcher(sc, query);
        ManagementObjectCollection result = searcher.Get();

        foreach (ManagementObject obj in result)
        {
            if (obj["Description"] != null) Console.WriteLine("Description:\t" + obj["Description"].ToString());
            if (obj["DeviceID"] != null) Console.WriteLine("DeviceID:\t" + obj["DeviceID"].ToString());
            if (obj["PNPDeviceID"] != null) Console.WriteLine("PNPDeviceID:\t" + obj["PNPDeviceID"].ToString());
        }

WMI Code creator : http://sdrv.ms/PZKlKu

http://stackoverflow.com/a/6643234
https://social.msdn.microsoft.com/Forums/vstudio/en-US/f3003f55-aecf-41da-b0a8-1b5e8bf99894/extracting-serial-number-vendor-id-and-product-id-from-usb-pendrive-using-c?forum=netfxbcl

Answer:WMI: Get USB device description on insertion https://t.co/3EjWHFmXiD

— ศรรามไงจะใครล่ะ❤️ (@sornram9254) June 3, 2016

Extracting S/N, vendor id and product id from USB pendrive using C#https://t.co/x14T5rEzNE

WMI Code creator: https://t.co/UG3oqpVu1W

— ศรรามไงจะใครล่ะ❤️ (@sornram9254) June 3, 2016

Get different and common items in two arrays with LINQ [C#]

var list1 = new string[] {"1", "2", "3", "4", "5", "6"};
var list2 = new string[] {"2", "3", "4"};
var listCommon = list1.Intersect(list2);
foreach (string s in listCommon) Console.WriteLine(s);

Output:

2
3
4

http://stackoverflow.com/a/10648270

How to create a Winforms Combobox with Label and Value [C#]

    private void PopulateComboBox()
    {
        var dict = new Dictionary<int, string>();
        dict.Add(2324, "Toronto");
        dict.Add(64547, "Vancouver");
        dict.Add(42329, "Foobar");

        comboBox1.DataSource = new BindingSource(dict, null);
        comboBox1.DisplayMember = "Value";
        comboBox1.ValueMember = "Key";
    }

http://stackoverflow.com/a/2023457

Remove duplicates from array c#

int[] s = { 1, 2, 3, 3, 4};
int[] q = s.Distinct().ToArray();

http://stackoverflow.com/a/9685