Print Number Pattern in C#

class Program
{
   static void Main(string[] args)
   {

                  int no = 5;


                    for (int i = 1; i <= 5; i++)
                     {
                           for (int j = 1; j <= i; j++)
                           {
                                 Console.Write(i);
                            }
                           Console.WriteLine();
                      }
                  Console.ReadKey();
      }

}