How to generate 6 digits continuous numbers in c#?

using System;
using System.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            var str = GenerateContinuousCode();
        }

        public static string GenerateContinuousCode()
        {
            return new string(
                Enumerable.Repeat("0123456789", 6)
                          .Select(s => s[new Random().Next(s.Length)])
                          .ToArray());
            
        }
    }  
}