Checks if the given string is a valid port number. : Validation « Regular Expressions « C# / C Sharp

1. C# / C Sharp
2. Regular Expressions
3. Validation

Checks if the given string is a valid port number.

    

using System;
using System.Text.RegularExpressions;

namespace BuildScreen.Core.Utilities
{
    public static class Validation
    {

        /// <summary>
        /// Checks if the given string is a valid port number.
        /// </summary>
        /// <param name="value">The string to be checked.</param>
        /// <returns>A boolean value.</returns>
        public static bool IsPort(string value)
        {
            if (string.IsNullOrEmpty(value))
                return false;

            Regex numeric = new Regex(@"^[0-9]+$", RegexOptions.Compiled | RegexOptions.IgnoreCase);

            if (numeric.IsMatch(value))
            {
                try
                {
                    if (Convert.ToInt32(value) < 65536)
                        return true;
                }
                catch (OverflowException)
                {
                }
            }

            return false;
        }
    }
}

   
    
    
    
  

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