C#

delegate IntPtr KeyboardProc(IntPtr code, IntPtr wParam, IntPtr lParam);

protected override void WndProc(ref Message m) 
{
if(m.Msg == 0xA0 ) //mouse move on NC area
{
Point pt = System.Windows.Forms.Cursor.Position;
label1.Text = pt.X.ToString();
label2.Text = pt.Y.ToString();
}

<br />
Point ptScreen = Cursor.Position;<br />
Point ptClient = PointToClient(pt);

public void ShowOracleException() 
{
   OracleConnection myConnection =
      new OracleConnection("Data Source=Oracle8i;Integrated Security=yes");

   try 
   {
      myConnection.Open();
   }
   catch (OracleException e) 
   {
     string errorMessage = "Code: " + e.Code + "\n" +
                           "Message: " + e.Message;

     System.Diagnostics.EventLog log = new System.Diagnostics.EventLog();
     log.Source = "My Application";
     log.WriteEntry(errorMessage);
     Console.WriteLine("An exception occurred. Please contact your system administrator.");
   }
}

blah'; drop table Products --

OracleCommand cmd = new OracleCommand(conn,
  "insert Products values (:emp_id)");
try
{
  cmd.Parameters.Add("emp_id", OracleType.Number, 8).Value =
    int.Parse(co_emid.Text); // could throw an exception for improper format
  conn.Open();
  cmd.ExecuteNonQuery();
}
catch (FormatException)
{
  MessageBox.Show("Invalid employee id.");
  co_emid.Focus();
}
finally
{
  conn.Close();
}