Use Regex to validate your input : Regex Match « Regular Expression « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Regular Expression
3. Regex Match

using System;
using System.Text.RegularExpressions;

class MainClass
{
    public static void Main(string[] args)
    {

        string regex = "your regex"; 
        string input = "your input";
        
        Regex r = new Regex(regex);
        Console.WriteLine(r.IsMatch(input));
        
        //or Regex.IsMatch(input, regex);
    }
}

False