public static void LogOutUser()
{
//reset auto login properties
Properties.Settings.Default.Username = "";
Properties.Settings.Default.Password = "";
Properties.Settings.Default.Save();
//reset all other static fields
UserID = null;
Username = null;
AccessToken = null;
ExpenseCategories.Clear();
EarningCategories.Clear();
DailyInfoList.Clear();
MonthlyInfoList.Clear();
UserAuthenticationForm form = new UserAuthenticationForm();
form.Show();
}
