The Program in C# Program to display Alphabet pattern ‘M’ with an asterisk is given below:

using System;

namespace AlphabetPattern
{
    class Program
    {
        static void Main(string[] args)
        {
            int rows = 5;
            for (int i = 0; i < rows; i++)
            {
                for (int j = 0; j < rows; j++)
                {
                    if (j == 0 || j == rows - 1 || i == j || i == rows - 1 - j)
                    {
                        Console.Write("*");
                    }
                    else
                    {
                        Console.Write(" ");
                    }
                }
                Console.WriteLine();
            }
            Console.ReadLine();
        }
    }
}

Output:

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

Pro-Tips💡

Here are the step by step execution of above program:

1. The program starts by using the “System” namespace.
2. The program defines a namespace called “AlphabetPattern”.
3. The program defines a class called “Program”.
4. The program defines the Main method, which is the entry point of the program.
5. The program defines a variable called “rows” and assigns it a value of 5, which represents the number of rows in the pattern.
6. The program uses a for loop to iterate through the rows.
7. The program uses a nested for loop to iterate through the columns in each row.
8. The program checks the value of j and i. If j is equal to 0 or j is equal to rows - 1 or i is equal to j or i is equal to rows - 1 - j, it prints an asterisk to the console. Otherwise, it prints a space to the console.
9. The program adds a line break after each row is complete.
10. The program waits for the user to press Enter before closing the console.
11. The program ends by returning 0 from the Main method.