Question

How to check if a string contain only letters in C#

Answer 1

using System;

public static class Program {
    public static bool isInAlphabeticalCharacters(string s) {
        for (var i = 0; i <= s.Length - 1; i++) {
            if (!char.IsLetter(s[i]))
                return false;
        }

        return true;
    }
    public static void Main()
    {
        string s1 = "vb.net java c c++";
        Console.WriteLine(isInAlphabeticalCharacters(s1));

        string s2 = "abcxyz";
        Console.WriteLine(isInAlphabeticalCharacters(s2));
    }
}


/*

run:

False
True

*/ 

 

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