Method Parameters Actual Reference in C#

using System.IO;
using System;
class MyClass
{
    public int Value = 20;
}
class MethodParametersActualReference
{
    static void RefAsParameter(ref MyClass objByRef)
    {
        objByRef.Value = 50;
        Console.WriteLine("After member assignment: {0}", objByRef.Value);
        objByRef = new MyClass();
        Console.WriteLine("After new object creation: {0}", objByRef.Value);
    }
    static void Main() {
        MyClass obj = new MyClass();
        Console.WriteLine("Before method call: {0}", obj.Value);
        RefAsParameter(ref obj);
        Console.WriteLine("After method call: {0}", obj.Value);
    }
}