The Program in C# Program to Display Pattern like right angle triangle using Asterisk is given below:

using System;

namespace RightAngleTriangle
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello Codeauri Family, enter the number of rows here to create the pattern of right angle triangle: ");
            int rows = int.Parse(Console.ReadLine());

            for (int i = 1; i <= rows; i++)
            {
                for (int j = 1; j <= i; j++)
                {
                    Console.Write("*");
                }
                Console.WriteLine();
            }

            Console.ReadLine();
        }
    }
}

Output:

Hello Codeauri Family, enter the number of rows here to create the pattern of right angle triangle: 
9

*
**
***
****
*****
******
*******
********
*********

Pro-Tips💡

Here are the step by step execution of above program:

1. The using System; directive is a reference to the System namespace, which provides access to commonly used types, such as the Console class.
2. The code defines a namespace RightAngleTriangle that contains a single class Program.
3. The Main method is the entry point of the program and contains the logic to create the right-angled triangle pattern.
4. Console.WriteLine is used to display a prompt asking the user to enter the number of rows.
5. The int.Parse method is used to parse the user input from the console and store it as an integer in the rows variable.
6. The code uses two nested for loops to build the right-angled triangle pattern. The outer loop runs rows number of times and the inner loop runs i number of times, where i is the current iteration of the outer loop.
7. Within the inner loop, the Console.Write method is used to print a single asterisk (*) for each iteration.
8. The Console.WriteLine method is used at the end of each iteration of the outer loop to move to the next line.
9. Finally, the Console.ReadLine method is used to prevent the console window from closing immediately after the program execution.