Silverlight 4 with (HTTP) Duplex and SQL Notifications

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace SLDuplexDependency.Web.Classes
{
	public static class Guard
	{
		/// <summary>
		/// Checks a string argument to ensure it isn't null or empty
		/// </summary>
		/// <param name="argumentValue">The argument value to check.</param>
		/// <param name="argumentName">The name of the argument.</param>
		public static void ArgumentNotNullOrEmptyString(string argumentValue, string argumentName)
		{
			ArgumentNotNull(argumentValue, argumentName);

			if (argumentValue.Length == 0)
				throw new ArgumentException("String parameter cannot be empty", argumentName);
		}

		/// <summary>
		/// Checks an argument to ensure it isn't null
		/// </summary>
		/// <param name="argumentValue">The argument value to check.</param>
		/// <param name="argumentName">The name of the argument.</param>
		public static void ArgumentNotNull(object argumentValue, string argumentName)
		{
			if (argumentValue == null)
				throw new ArgumentNullException(argumentName);
		}
	}
}