Handle null value using Convert.ToString()

using System;
using System.Linq;
using System.Text;
using System.Collections;
using System.Data;
using System.Xml;
using System.IO;
using System.Diagnostics;
using System.Collections.Generic;

namespace BlogProject
{
class Program
{
static void Main(string[] args)
{
string Value = null;
Console.WriteLine(Convert.ToString(Value)); //Can handle null value
Console.WriteLine(Value.ToString()); //Cannot handle null value
Console.ReadLine();
}
}
}