private static void FileBookName(IGradeinterface bookOne)
{
StreamWriter fout = File.CreateText("fileout.txt");
try
{
fout.WriteLine(bookOne.getGradeName() + bookOne.GetHashCode().ToString());
}
finally
{
fout.Close();
}
}
private static void SetGrade(IGradeinterface bookOne, IGradeinterface bookTwo)
{
try
{
bookOne.setGradeName("First grade book");
bookTwo.setGradeName("New grade book");
bookOne.setGradeName("Again First book");
Console.WriteLine(bookOne.getGradeName());
//bookTwo.setGradeName(null);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.WriteLine(ex.StackTrace);
}
finally
{
Console.WriteLine("After exceptions if any.....");
}
}