How to Count Only Letters in a String in C#

This is very interesting and logic building program in C# for beginners. The program will count only letters in a given strings e.g. a1B2C456 has only 3 Letters.

Source Code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace assad
{
    class countLetters
    {
        static void Main(string[] args)
        {
            welcomeScrean();
            String str = "A1B2C36gfhf5";
            int numberOfLetters = 0;
            foreach (char letter in str)
            {
                if (Char.IsLetter(letter))
                    numberOfLetters++;
            }
            Console.WriteLine("\tStriing " + str + " has " + numberOfLetters + " letters.");
            int ab = Console.Read();
        }
        private static void welcomeScrean()
        {
            Console.ForegroundColor = ConsoleColor.Magenta;
            Console.Write("\t*******************************************************" + "\n"
                        + "\t*******************************************************" + "\n"
                        + "\t**                   Welcome To                      **" + "\n"
                        + "\t**                 Count Letters                     **" + "\n"
                        + "\t**                    Program                        **" + "\n"
                        + "\t*******************************************************" + "\n"
                        + "\t*******************************************************\n\n\n\n");
        }
    }
}

Output of the Program

About Asad

Asad Niazi is Software Engineer , Programmer, Web Developer and a young mentor of BloggersTown and PProgramming. Asad Love to writes about Technology, Programming, Blogging and make money online.