Exception Handling - Exercise 4

using System;
using System.Net;
/*
    4. Write a program that downloads a file from Internet (e.g. http://www.devbg.org/img/Logo-BASD.jpg)
    and stores it the current directory. Find in Google how to download files in C#.
    Be sure to catch all exceptions and to free any used resources in the finally block.
*/
public class DownloadAFile
{
    public static void DownloadFile(WebClient client)
    {
        client.DownloadFile("http://www.devbg.org/img/Logo-BASD.jpg", @"F:\Desktop\Logo-BASD.jpg");
    }

    public static void Main()
    {
        WebClient client = new WebClient();

        try
        {
            DownloadFile(client);
            Console.WriteLine("File downloaded successfully.");
        }
        catch (ArgumentNullException)
        {
            Console.WriteLine("No address specified. Please input correct address.");
        }
        catch (WebException we)
        {
            Console.WriteLine(we.Message);
        }
        catch (NotSupportedException)
        {
            Console.WriteLine("The file is being downloaded. Please wait.");
        }
        finally
        {
            client.Dispose();
            GC.Collect();
        }
    }
}