}//END _Delete_Button_Click()
/// <summary>
/// Randomly pairs names
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void _Generate_Button_Click(object sender, RoutedEventArgs e)
{
try
{
bool pairsComplete = false;
while (pairsComplete == false)
{
CryptoRandomNumberGen random = new CryptoRandomNumberGen();
//reset
_ViewModel.NamePairs = new Dictionary <string, string>();
//These are the names remaining to be picked
List <string> namesRemaining = new List <string>(_ViewModel.Names);
namesRemaining.Shuffle();
//These are the people picking
List <string> namesForPicking = new List <string>(_ViewModel.Names);
namesForPicking.Shuffle();
//go through each name
foreach (string name in namesForPicking)
{
//Only allow valid names for this person
List <string> validNamesForPerson = new List <string>(namesRemaining);
validNamesForPerson.Remove(name);
//Need to ensure that we don't reach a case there the last two names are the same
if (validNamesForPerson.Count > 0)
{
//chose a random person for this person
string chosenName = validNamesForPerson[random.Next(0, validNamesForPerson.Count)];
_ViewModel.NamePairs[name] = chosenName;
namesRemaining.Remove(chosenName);
}
else
{
//we failed
break;
}
}
//Did we get through all names?
if (namesRemaining.Count == 0)
{
pairsComplete = true;
}
}
Properties.Settings.Default.SavedNames = string.Join(",", _ViewModel.Names.ToList());
Properties.Settings.Default.Save();
}
catch (Exception ex)
{
MessageBox.Show($"ERROR OCCURED: {ex.Message}.", "ERROR", MessageBoxButton.OK, MessageBoxImage.Error);
}
}//END _Generate_Button_Click()
