ESG.Utilities.ConfigurationHelper.XmlConfigurationProvider

XMLConfigurationProvider.cs

using System.Collections.Specialized;
using System.Configuration;
using System.Xml;
using System.IO;
using System;

namespace ESG.Utilities.ConfigurationHelper
{
    public class XmlConfigurationProvider : IConfigurationProvider
    {
        private readonly NameValueCollection _appSettings;
        private readonly ConnectionStringSettingsCollection _connectionStrings;

        public XmlConfigurationProvider(string path)
        {
            _appSettings = new NameValueCollection();
            _connectionStrings = new ConnectionStringSettingsCollection();

            XmlDocument xd = new XmlDocument();
            xd.LoadXml(File.ReadAllText(path));

            XmlNodeList nl = xd.SelectNodes("//appSettings/*");
            foreach (XmlNode n in nl)
                AddNodes(n, (name, value) => _appSettings.Add(name, value));

            nl = xd.SelectNodes("//connectionStrings/*");
            foreach (XmlNode n in nl)
                AddNodes(n, (name, value) => _connectionStrings.Add(new ConnectionStringSettings(name, value)));
        }

        private static void AddNodes(XmlNode node, Action<string, string> action)
        {
            AddNodes(node, string.Empty, action);
        }

        private static void AddNodes(XmlNode node, string path, Action<string, string> action)
        {
            if (node.ChildNodes.Count > 0)
                foreach (XmlNode n in node.ChildNodes)
                    AddNodes(n, (!string.IsNullOrEmpty(path) ? path + "." : "") + node.Name, action);

            else
                action(path, node.InnerText.Trim());
        }

        public NameValueCollection AppSettings
        {
            get { return _appSettings; }
        }

        public ConnectionStringSettingsCollection ConnectionStrings
        {
            get { return _connectionStrings; }
        }
    }
}