Private Sub Form1_Load(sender As Object, _
  e As EventArgs) Handles MyBase.Load
   ' Display the hand cursor when the mouse pointer
   ' is over the combo box drop-down button. 
   comboBox1.Cursor = Cursors.Hand

   ' Fill the combo box with all the logical 
   ' drives available to the user. 
   Try
      Dim logicalDrive As String
      For Each logicalDrive In  Environment.GetLogicalDrives()
         comboBox1.Items.Add(logicalDrive)
      Next logicalDrive
   Catch ex As Exception
      MessageBox.Show(ex.Message)
   End Try
End Sub

private void Form1_Load(object sender, EventArgs e)
{
   // Display the hand cursor when the mouse pointer
   // is over the combo box drop-down button. 
   comboBox1.Cursor = Cursors.Hand;

   // Fill the combo box with all the logical 
   // drives available to the user.
   try
   {
      foreach(string logicalDrive in Environment.GetLogicalDrives() )
      {
         comboBox1.Items.Add(logicalDrive);
      }
   }
   catch(Exception ex)
   {
      MessageBox.Show(ex.Message);
   }
}

private:
   void Form1_Load( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      // Display the hand cursor when the mouse pointer
      // is over the combo box drop-down button.
      comboBox1->Cursor = Cursors::Hand;

      // Fill the combo box with all the logical
      // drives available to the user.
      try
      {
         IEnumerator^ myEnum = Environment::GetLogicalDrives()->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            String^ logicalDrive = safe_cast<String^>(myEnum->Current);
            comboBox1->Items->Add( logicalDrive );
         }
      }
      catch ( Exception^ ex ) 
      {
         MessageBox::Show( ex->Message );
      }
   }