Question

I am trying to write a regex expression for identifying alphabets in a string. I need to go character by character for using it in my program in C#

String originalData = "90123Abc";
Regex _regex = new Regex(@"[a-zA-Z]$");

foreach (char c in originalData)
{
    if (System.Text.RegularExpressions.Regex.IsMatch(c, _regex))
    {
        System.Console.WriteLine("  (match for '{0}' found)", _regex);
    }
    else
    {
        System.Console.WriteLine();
    }    
}

Is it possible to check character by character using regex? If not how could I go about it?

Answer 1

for (int i = 0; i < input.Length; i++)
{
   if(Char.IsLetter(input[i]))
   {
    // its alphabetic
   }
}

or shortly

input.Where(c => char.IsLetter(c)).ToList()