static void Main(string[] args)
{
Console.WriteLine("Input type of file (XML, TXT or DOC): ");
string file = Console.ReadLine();
AbstractHandler handler = null;
switch (file)
{
case "XML":
handler = new XMLHandler();
break;
case "TXT":
handler = new TXTHandler();
break;
case "DOC":
handler = new DOCHandler();
break;
default:
Console.WriteLine("Unknown file format");
break;
}
if (handler != null)
{
handler.Create();
handler.Open();
handler.Change();
handler.Save();
}
Console.ReadKey();
}