C#

abstract class Foo
{
}

class Bar1 : Foo
{
}

class Bar2 : Foo
{
}

class Program
{
    static void Main(string[] args)
    {
        Dictionary<string, Foo> foos = new Dictionary<string, Foo>();
        for(int i = 0; i < 5; i++)
           foos.Add("Bar1." + i, new Bar1());

        for (int i = 0; i < 10; i++)
           foos.Add("Bar2." + i, new Bar2());

        List<Bar2> bar2List = new List<Bar2>();
        foreach (Foo foo in foos.Values)
        {
            if(foo is Bar2)
            {
                bar2List.Add((Bar2)foo);
            }
        }
    }
}

<br />
Event one occurs --> text box updated --> after 10 seconds --> text box back to normal

Thread t = new Thread(keep_run);

public void update()
{
    t.Interrupt();
    if (MessageLbl.InvokeRequired)
    {
        MessageLbl.Invoke(new setText(() => MessageLbl.Text = "User settings have been updated."));
    }
    else
    {
        MessageLbl.Text = "User settings have been updated.";
    }

    t = new Thread(keep_run);
    t.Start();
}

private void keep_run()
{
    try
    {
        Thread.Sleep(10000);
        MessageLbl.Invoke(new setText(() => MessageLbl.Text = "Welcome to MAT Downloader"));
    }
    catch { MessageBox.Show("Interrupted"); }
}
}

void BeginConnect()
{
    new Thread(new ThreadStart(delegate()
    {
        NamedPipeClientStream client = new NamedPipeClientStream(".", "testpipe", PipeDirection.InOut);
        try
        {
            client.Connect(5000); // connect client as another server instance available
            //raise connect event
        }
        catch (TimeoutException ex) //Could not connect to the server within the specified timeout period.
        {
        }
        catch (IOException ex) //The server is connected to another client and the time-out period has expired.
        {
        }

        BeginConnect();
    })).Start();
}

//Sample result when you query using SQL Server.
----------------------------------------------------------------------------------------------
ProductID   Name	   ProductNumber	MakeFlag	FinishedGoodsFlag	Color
----------------------------------------------------------------------------------------------
317         LL Crankarm    CA-5965              0               1                       Black
318         ML Crankarm    CA-5938              0               1                       Black
319         HL Crankarm    CA-5990              0               1                       Black
320         Chainring      CA-5932              0               1                       Black
---------------------------------------------------------------------------------------------

//lvw = ListView control
     
DataClasses1DataContext db = new DataClasses1DataContext();

DataTable dt = new DataTable();
DataColumn dc = new DataColumn();
DataRow dr;

var products = from p in db.Products
               where p.Color != null
               select p;

#region getHeader
var headers = products.First();
foreach (var columnHeader in headers.GetType().GetProperties())
{
      lvw.Columns.Add(columnHeader.Name);
}
#endregion

ListViewItem lstItem = null;

foreach (var itms in products)
{
    lstItem = new ListViewItem(itms.ProductID.ToString());
    lstItem.SubItems.Add(itms.Name);
    lstItem.SubItems.Add(itms.ProductNumber);
    ..... and so on
}