remove special char c#, C#

Language: Layout:

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
           string str = "$N!il$e&s%h%";
            Console.WriteLine(RemoveSpecialChars(str));
        }
        
    
         public static string RemoveSpecialChars(string str)
        {
            // Create  a string array and add the special characters you want to remove
            string[] chars = new string[] { ",", ".", "/", "!", "@", "#", "$", "%", "^", "&", "*", "'", "\"", ";", "_", "(", ")", ":", "|", "[", "]" };
            //Iterate the number of times based on the String array length.
            for (int i = 0; i < chars.Length; i++)
            {
                if (str.Contains(chars[i]))
                {
                    str = str.Replace(chars[i], "");
                }
            }
            return str;
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,22 sec, absolute running time: 0,09 sec, cpu time: 0,09 sec, average memory usage: 13 Mb, average nr of threads: 2, absolute service time: 0,34 sec