static void Main(string[] args)
{
int choose = 0;
BookLibrary lib = new BookLibrary();
do
{
Console.WriteLine("1. Add New A Book");
Console.WriteLine("2. Update A Book");
Console.WriteLine("3. Delete A Book");
Console.WriteLine("4. Print Out All Book");
Console.WriteLine("5. Quit");
while (true)
{
try
{
Console.WriteLine("YOUR CHOCE: ");
choose = int.Parse(Console.ReadLine());
if (choose <= 0 || choose > 5)
{
Console.WriteLine("Range between 1 and 5");
throw new Exception();
}
break;
}
catch (Exception ex)
{
}
}
switch (choose)
{
case 1:
lib.AddNewBook();
break;
case 2:
int IdToUpdate = 0;
while (true)
{
try
{
Console.WriteLine("Input Book's Id: ");
String BookId = Console.ReadLine();
for (int i = 0; i < BookId.Length; i++)
{
if (!Char.IsDigit(BookId[i]))
{
Console.WriteLine("Please input right number");
throw new Exception();
}
}
IdToUpdate = int.Parse(BookId);
//if (checkId(id) == true)
//{
// Console.WriteLine("Your id has been registed");
// throw new Exception();
//}
break;
}
catch (Exception ex)
{
//Console.WriteLine(ex.Message);
}
}
lib.UpdateBook(IdToUpdate);
break;
case 3:
int IdToDelete = 0;
while (true)
{
try
{
Console.WriteLine("Input Book's Id: ");
String BookId = Console.ReadLine();
for (int i = 0; i < BookId.Length; i++)
{
if (!Char.IsDigit(BookId[i]))
{
Console.WriteLine("Please input right number");
throw new Exception();
}
}
IdToDelete = int.Parse(BookId);
//if (checkId(id) == true)
//{
// Console.WriteLine("Your id has been registed");
// throw new Exception();
//}
break;
}
catch (Exception ex)
{
//Console.WriteLine(ex.Message);
}
}
if (lib.checkId(IdToDelete))
{
Console.WriteLine(" Do you want to delete that book ( YES to delete) ");
String option = Console.ReadLine();
if (option.Equals("YES", StringComparison.OrdinalIgnoreCase))
{
lib.DeleteBook(IdToDelete);
}
}
break;
case 4:
lib.PrintAllBook();
break;
case 5:
default: Console.WriteLine("Google bye "); break;
}
}while (choose >= 1 && choose < 5);
}