C#

public const int _IS3kLineDescriptionSize = 82;
public const int _IS3kShowLinesSize = 1656;

WebClient client = new WebClient();
CredentialCache cache = new CredentialCache();
cache.Add(new Uri("http://www.domain.com/"), "Basic",
  new NetworkCredential("username", "password", "DOMAIN")));
client.Credentials = cache;
client.DownloadFile("http://www.domain.com/file.txt", "file.txt");

"If a man empties his purse into his head, no man can take it away from him, for an investment in knowledge pays the best interest." -- Joseph E. O'Donnell

The Second EuroCPian Event will be in Brussels on the 4th of September

Can't manage to P/Invoke that Win32 API in .NET? Why not do interop the wiki way!

FormA.cs
private void Form1_Load(object sender, System.EventArgs e)
{
  Form frmB = new FormB();
  frmB.MdiParent = this;
  frmB.Show();			
}
 
FormB.cs
private void btnAccessFormA_Click(object sender, System.EventArgs e)
{
   //I have created a method called "test". I can't access that method either. And 
   // it got public access.
   Form frmA = new FormA();					
   //This bit of code doesn't work. Cause the object(frmA) i created is referin to null.
// frmA.button1.Visible = true;
// frmA.button2.Visible = true;
// frmA.button3.Visible = true;
// frmA.button4.Visible = true;
// frmA.button5.Visible = true;
// frmA.button6.Visible = true;
}

FormB.cs
private void btnAccessFormA_Click(object sender, System.EventArgs e)
{
   // Get your parent form, which is FormA in this case and access your
   // button since you have set it as public.
   this.MdiParent.button1.Visible = true;
}

((FormA)this.MdiParent).button1.Visible = true;

textBox1.Text = DateTime.Now.ToString("hh:mmtt");