C#

private void ComboBox_KeyDown(object sender, KeyEventArgs e)
        {
            this.ComboBox.DroppedDown = true;
            if (e.KeyCode == Keys.Up && this.ComboBox.SelectedIndex != 0)
            {
                this.ComboBox.SelectedIndex -= 1;
                return;
            }
            if (e.KeyCode == Keys.Down && this.ComboBox.SelectedIndex != this.ComboBox.Items.Count - 1)
            {
                this.ComboBox.SelectedIndex += 1;
                return;
            }
            this.ComboBox.SelectedItem = this.ComboBox.Text + "%";
        }

private void ComboBox_KeyDown(object sender, KeyEventArgs e)
        {
            this.ComboBox.DroppedDown = true;
            if (e.KeyCode == Keys.Up && this.ComboBox.SelectedIndex != 0)
            {
                this.ComboBox.SelectedIndex = this.ComboBox.SelectedIndex - 1;
                return;
            }
            if (e.KeyCode == Keys.Down && this.ComboBox.SelectedIndex != this.ComboBox.Items.Count - 1)
            {
                this.ComboBox.SelectedIndex = this.ComboBox.SelectedIndex + 1;
                return;
            }
            this.ComboBox.SelectedItem = this.ComboBox.Text + "%";
        }

SaveFileDialog saveDialog = new SaveFileDialog();
          saveDialog.AddExtension = true;
          saveDialog.FileName = "Checkers Game";
          saveDialog.InitialDirectory = @"C:\Documents and Settings\Bar\My Documents\";
          saveDialog.OverwritePrompt = true;
          saveDialog.Title = "Save game";
          saveDialog.ValidateNames = true;
          saveDialog.ShowDialog();
          if (saveDialog.FileName != "")
          {
              writer.Close();
              file.Close();
              FileStream fs = new FileStream(@"C:\Documents and Settings\Bar\My Documents\savegame.txt", FileMode.Open);
              fs = (System.IO.FileStream)saveDialog.OpenFile();

          }