/BlogEngine/DotNetSlave.BusinessLogic/Providers/XmlProvider/PingServices.cs

namespace BlogEngine.Core.Providers

{

    using System;

    using System.Collections.Specialized;

    using System.IO;

    using System.Linq;

    using System.Text;

    using System.Xml;



    /// <summary>

    /// A storage provider for BlogEngine that uses XML files.

    ///     <remarks>

    /// To build another provider, you can just copy and modify

    ///         this one. Then add it to the web.config's BlogEngine section.

    ///     </remarks>

    /// </summary>

    public partial class XmlBlogProvider : BlogProvider

    {

        #region Public Methods



        /// <summary>

        /// Loads the ping services.

        /// </summary>

        /// <returns>A StringCollection.</returns>

        public override StringCollection LoadPingServices()

        {

            var fileName = this.Folder + "pingservices.xml";

            if (!File.Exists(fileName))

            {

                return new StringCollection();

            }



            var col = new StringCollection();

            var doc = new XmlDocument();

            doc.Load(fileName);



            foreach (XmlNode node in

                doc.SelectNodes("services/service").Cast<XmlNode>().Where(node => !col.Contains(node.InnerText)))

            {

                col.Add(node.InnerText);

            }



            return col;

        }



        /// <summary>

        /// Saves the ping services.

        /// </summary>

        /// <param name="services">

        /// The services.

        /// </param>

        public override void SavePingServices(StringCollection services)

        {

            if (services == null)

            {

                throw new ArgumentNullException("services");

            }



            var fileName = this.Folder + "pingservices.xml";



            using (var writer = new XmlTextWriter(fileName, Encoding.UTF8))

            {

                writer.Formatting = Formatting.Indented;

                writer.Indentation = 4;

                writer.WriteStartDocument(true);

                writer.WriteStartElement("services");



                foreach (var service in services)

                {

                    writer.WriteElementString("service", service);

                }



                writer.WriteEndElement();

            }

        }



        #endregion

    }

}