public static IPeopleReader GetReader()
{
if (savedReader?.GetType() == readerType)
{
return(savedReader);
}
object readerObject = Activator.CreateInstance(readerType);
savedReader = readerObject as IPeopleReader;
if (savedReader is null)
{
throw new InvalidOperationException(
$"readerType '{readerType}' does not implement 'IPeopleReader'");
}
return(savedReader);
}
public static void DisplayPeople()
{
try
{
IPeopleReader reader = IReaderFactory.GetReader();
Console.WriteLine(reader.GetType());
var people = reader.GetPeople();
foreach (var person in people)
{
Console.WriteLine(person);
}
}
catch (Exception ex)
{
Console.WriteLine($"{ex.GetType()}:\n {ex.Message}");
}
finally
{
Console.WriteLine("===================");
}
}
