private static void containsCheck(City _city)
{
if (!cities.Contains(_city))
{
cities.Add(_city);
}
}
// public method to add to the database if not already there
public static void AddIfNotThere(City _city)
{
//containsCheck(_city); // won't work (easily) aside from String (see below)
//simplestCheck(_city); // simple but cumbersome
#region BEST SOLUTION - use LINQ to iterate through collection detecting if there or not
if (!(cities.Any(cty => cty.Name == _city.Name))) cities.Add(_city);
#endregion
}
private static void simplestCheck(City _city)
{
bool foundCity = false;
foreach (City cty in cities)
{
if (_city.Name == cty.Name)
{
foundCity = true;
break;
}
}
if (!foundCity) cities.Add(_city);
}
private void btnAddCity_Click(object sender, RoutedEventArgs e)
{
string _city = tbkCity.Text; // read from textbox for data in
City _newCity = new City { Name = _city, Pop = rnd.Next(10000000) };
// add to the collection if not already present
DataStore.AddIfNotThere(_newCity);
}