Question

Edit: In real life i don’t have a Book class. This is just an example to be clear. Real problem really needs reflection to solve it.

Suppose that I have some classes:

Book, Apple, Door.

class Book
{
   ...
   public decimal getPrice()
   {...}
   public string getTitle()
   {...}
   public decimal getAuthor()
   {...}
}

and something same for other classes.

May i call a class method dynamically from a string:

Book myBook = new Book("Title", "Author", 44);

string title = runMethod(myBook, "getTitle");

Answer 1

You can use something like this, using reflection:

class Program
{
static void Main(string[] args)
{
    var b = new Book("Book Title", 2342);

    Console.WriteLine(CallMethod(b, "GetTitle", "Not Found"));
}

public static K CallMethod<T,K>(T a, string method, K defaultOjb)
{
    var t = a.GetType();

    var mi = t.GetMethod(method);
    if (mi == null) return defaultOjb;

    var ret=mi.Invoke(a, new object[] {});

    return (K) ret;
}
}

public class Book
{
private readonly string _title;
private readonly decimal _price;

public decimal GetPrice()
{
    return _price;
}
public string GetTitle()
{
    return _title;
}

public Book(string title, decimal price)
{
    _title = title;
    _price = price;
}
}