using System;

using System.Runtime.CompilerServices;

using System.Reflection;

public static class ObjectExtensions

{

    public static T CastTo<T>(this object o) => (T)o;

​

    public static dynamic CastToType(this object o, Type type)

    {

        var methodInfo = typeof(ObjectExtensions).GetMethod(nameof(CastTo), BindingFlags.Static | BindingFlags.Public);

        var genericArguments = new[] { type };

        var genericMethodInfo = methodInfo?.MakeGenericMethod(genericArguments);

        return genericMethodInfo?.Invoke(null, new[] { o });

    }

}

​

public class MyDerivedObject : Object

{

}

​

public class Program

{

    public static void PrintMyType<T>(T theObject)

    {

        Console.WriteLine($"The type is now {typeof(T).Name}");

    }

    public static void Main()

    {

        var derivedObject = new MyDerivedObject();

        PrintMyType(derivedObject);

        Object tmp = derivedObject;

        PrintMyType(tmp);

        PrintMyType(tmp.CastToType(tmp.GetType()));

    }

}