问在C# =>中执行控制台应用程序中的类库

EN

public static void Main()
    {
        Console.Clear();
        Console.WriteLine("\nMenu Driven Program");
        Console.WriteLine("\n<--------List of Available Options-------->");
//Creating a list to Select from
        Console.WriteLine("\n  Select Any of the Following Function :");
        Console.WriteLine("\n_________________________________________");
        Console.WriteLine("\n1. Arithmatic Operators\n2. Logical Operators");
        Console.WriteLine("\n3.Misc1\n4. Misc2");
//Accepting a normal string
        string b = Console.ReadLine();
        int d;
// Following converts string into an integer
        Int32.TryParse(b, out d);

//Following code is used to create menu-driven program
        switch (d)
        {
            case 1:
//Here I wish to call one class library 
                break;

            case 2:
//Here I wish to call another class library
                break;
//And so on.    

            default:
                Console.WriteLine("\n\nWhat you wish to do?\na. Continue the Program\n\nb. Exit the Program");
                char c = Convert.ToChar(Console.ReadLine());
                if(c=='a'||c=='A')
                {
                    Main();
                }
                else
                {
                    Exit();
                }                  
                break;
        }
    }