using System;
using System.IO;
using System.Text.RegularExpressions;

public class Test
{
	public static void Main()
	{
		string NewTextValue = "str";
        int characterLimit = 5;
		string regxForAlpha = "^[a-zA-Z \n]{0,"+characterLimit.ToString()+"}$";
		if(!string.IsNullOrEmpty(NewTextValue))
		if (!Regex.IsMatch( NewTextValue, regxForAlpha)){
			Console.WriteLine("No match");
		}
		else
		{
			Console.WriteLine("Match");
		}
	}
}