private IEnumerable <Airport> GetAllBy(string file)
{
var airports = new HashSet <Airport>();
try
{
using (var sr = new StreamReader(file))
{
string currentLine;
while ((currentLine = sr.ReadLine()) != null)
{
if (string.IsNullOrEmpty(currentLine))
{
throw new InvalidCastException("Impossible cast lineFile to Airport class.");
}
var data = currentLine.Split(',');
var origin = new Airport(data[0]);
var destination = new Airport(data[1]);
var price = decimal.Parse(data[2]);
if (airports.Any(a => a.Name.Equals(origin.Name)))
{
origin = airports.Single(a => a.Name.Equals(origin.Name));
}
if (airports.Any(a => a.Name.Equals(destination.Name)))
{
destination = airports.Single(a => a.Name.Equals(destination.Name));
}
origin.ConnectTo(destination, price);
airports.Add(origin);
airports.Add(destination);
}
}
}
catch (System.Exception e)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("The File could not be read:");
Console.WriteLine(e.Message);
Console.ResetColor();
}
return(airports);
}