TagTansformer

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PhotographersDB
{
    public class TagTansformer
    {
        public static string Transform(string tagString)
        {
            if (!tagString.StartsWith("#"))
            {
                tagString += "#" + tagString;
            }
            if (tagString.Contains(" ") || tagString.Contains("\t"))
            {
                tagString = tagString.Replace(" ", string.Empty);
                tagString = tagString.Replace("\t", string.Empty);
            }
            if (tagString.Length > 20)
            {
                tagString = tagString.Substring(0, 20);
            }

            return tagString;
        }
    }
}