/// <summary>
/// Refreshes the combobox to select the accounts.
/// </summary>
public void RefreshAccounts()
{
comboBoxAccounts.Items.Clear();
comboBoxAccounts.Items.AddRange(BotFile.GetAccountNames());
comboBoxAccounts.SelectedIndex = (comboBoxAccounts.Items.Count == 0) ? -1 : 0;
}