  | 
| Fig: Screenshot of output | 
using System;
class PatternProgramming
{
 public static void Main()
 {
  int i,row;
  Console.Write("Enter the no. of row: ");
  row=Convert.ToInt32(Console.ReadLine());
  for(int j=1;j<=row;j++)
  {
   for(i=1;i<=j;i++)
   Console.Write(i);
   Console.WriteLine();
  }
 }
}