private async Task <Users> IsValidUser(string userName, string password)
{
var user = await rcs.GetUserByUserNameAndPassword(userName, password);
if (user != null)
{
DataStore.setUserID(user.ID);
DataStore.setName(user.Name);
DataStore.setModirate(user.modirate);
DataStore.setRegon(user.regon);
DataStore.setRole(user.role);
}
return(user);
}