C#: Write a program to print to the screen the numbers from 1 to 6 (basic)

//Requirements: Write a program to print to the screen the numbers from 1 to 6 as follows:

1                                                

12                                              

123                                            

1234                                          

12345                                        

123456

//Code:
class Program{
        static void Main()
        {
            for (int i = 1; i < 7; i++) {
                for (int j = 1; j <= i; j++)
                    Console.Write(j);
                    Console.WriteLine();
            }
            Console.ReadLine();

        }
}