I'm trying to write generic method to cast types. I want write something like Cast.To(variable) instead of (Type) variable. My wrong version of this method:
public class Cast
{
public static T To(object o)
{
return (T) o;
}
}
And this is simple test:
public class A
{
public static explicit operator B(A a)
{
return new B();
}
}
public class B
{
}
A a = new A();
B b = Cast.To(a);
As you guessed, this code will fail with InvalidCastException.
Is this code fail because virtual machine doesn't know how to cast variable of type object to type B at run-time? But exception message says: "unable to cast object of type A to type B". So CLR knows about real type of variable o, why it cannot perform casting?
And here is main question: how should I rewrite method T To(object o) to fix this problem?
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