static public void ProgramMode(string keyWord)
{
DocumentProgram DP;
switch (keyWord)
{
case "basic":
DP = new DocumentProgram();
DP.OpenDOcument();
DP.EditDocument();
DP.SaveDocument();
break;
case "pro":
DP = new ProDocumentProgram();
DP.OpenDOcument();
DP.EditDocument();
DP.SaveDocument();
break;
case "expert":
DP = new ExpertDocumentProgram();
DP.OpenDOcument();
DP.EditDocument();
DP.SaveDocument();
break;
default:
Console.WriteLine("Invalid choice !");
break;
}
}
