File Name Validation

using System;
using System.Linq;

namespace FebTwoThree
{
    class Program
    {
        static void Main(string[] args)
        {
            bool fileNameError = false;
            do
            {
                Console.Write("Enter file name: ");
                string fileNameInput = Console.ReadLine();
                if (ContainsInvalidChars(fileNameInput))  // invalid chars are \/:*?"<>|
                {
                    fileNameError = true;
                    Console.Clear();
                    Console.WriteLine("The file name {0} contains an invalid character. \nPlease use another name.", fileNameInput);
                }
            }
            while (fileNameError);

            Console.WriteLine("User entered correct file name");
            Console.Read();
        }
        public static bool ContainsInvalidChars (string userInput)
        {
            if ( (userInput.Contains('/')) ||
                 (userInput.Contains('\\'))||
                 (userInput.Contains(':')) ||
                 (userInput.Contains('*')) ||
                 (userInput.Contains('?')) ||
                 (userInput.Contains('"')) ||
                 (userInput.Contains('<')) ||
                 (userInput.Contains('>')) ||
                 (userInput.Contains('|'))
                 )
            {
                return true;
            }
            else
            {
                return false;
            }
        }
    }
}