Common ConfigurationManager for app.config and web.config

ConfigurationWrapper.cs

using System.Collections.Specialized;
using System.Configuration;
using System.Reflection;
using System.Web.Configuration;

namespace TinyMess.Common
{
    internal static class ConfigurationManagerWrapper
    {
        private static bool IsAspDotNet { get; set; }

        static ConfigurationManagerWrapper()
        {
            IsAspDotNet = (Assembly.GetEntryAssembly() == null);
        }

        public static NameValueCollection AppSettings
        {
            get
            {
                return IsAspDotNet
                    ? WebConfigurationManager.AppSettings
                    : ConfigurationManager.AppSettings;
            }
        }

        public static ConnectionStringSettingsCollection ConnectionStrings
        {
            get
            {
                return IsAspDotNet
                    ? WebConfigurationManager.ConnectionStrings
                    : ConfigurationManager.ConnectionStrings;
            }
        }

    }
}