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");
}
}
}
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