Is possible to cast a variable to a type stored in another variable?

Question

This is what I need to do:

object foo = GetFoo();
Type t = typeof(BarType);
(foo as t).FunctionThatExistsInBarType();

Can something like th

Answer 1

Provided you know all required types at compile-time, duck typingis (sort of) possible:

class BarFoo {}
class Foo {}
class Bar {}

class Program
{
    static void Main( )
    {
        var foo = new Foo( );
        var bar = new Bar( );
        var barfoo = new BarFoo( );

        Console.WriteLine(DoStuff(foo));
        Console.WriteLine(DoStuff(bar));
        Console.WriteLine(DoStuff(barfoo));

    }

    static string DoStuff(Foo foo) { return "DoStuff(Foo foo)"; }
    static string DoStuff(Bar bar) { return "DoStuff(Bar bar)"; }
    static string DoStuff(Base fb) { return "DoStuff(object fb)"; }
}

Output:

Dostuff(Foo foo)
Dostuff(Bar bar);
DoStuff(object fb);

If you end up implementing a lot of methods that basically do exactly the same, consider implementing an interface.