C# .NET program that uses the Quality Center API

How to create a C# .NET program that uses the Quality Center API?
Description:
This example adds a defect to a project using C# .NET.
Usage:
1. Select File -> New -> Project.
2. Select Console Application for template.
3. Give the project a Name.


Example:
AddDefect
4. In the menu, select Project -> Add Reference.
5. Navigate to the COM tab.
6. Select OTA COM 8.0 Type Library.
7. Click <OK>.
8. In the Solution Explorer tab, select the Class1.cs file.
9. Add the code below.
Code:
using System;
using TDAPIOLELib;

namespace AddDefect
{
   /// <summary>
   /// Summary description for Class1.
   /// </summary>
   class Class1
   {
      /// <summary>
      /// The main entry point for the application.
      /// </summary>
      [STAThread]
      static void Main(string[] args)
      {
         TDConnectionClass td = new TDAPIOLELib.TDConnectionClass();
         try
         {
            td.InitConnectionEx("http://<servername>/tdbin");
            //Note: For Quality Center, connect by using the URL below:
            td.InitConnectionEx("http://<servername>:port/qcbin");
            td.ConnectProjectEx("DomainName","ProjectName","Username","Password");
         }
         catch
         {
            Console.WriteLine("Failed to connect to server.");
         }
         try
         {
            IBugFactory bfact = td.BugFactory as IBugFactory;
            IBug mybug = bfact.AddItem("MyBug1")as IBug;
            mybug.Summary = "This is a test.";
            mybug.Status = "Open";
            mybug.AssignedTo = "admin";
            mybug.Post();
         }
         catch
         {
            Console.WriteLine("Failed to add defect.");
         }
         try
         {
            td.DisconnectProject();
            td.ReleaseConnection();
         }
         catch
         {
            Console.WriteLine("Failed to disconnect server and/or project.");
         }
      }
   }
}