示例#1
0
        /// <summary>
        /// Creates a new <see cref="GenericSyndicationFeed"/> instance using the specified <see cref="Uri"/>, <see cref="ICredentials"/>, <see cref="IWebProxy"/>, and <see cref="SyndicationResourceLoadSettings"/> object.
        /// </summary>
        /// <param name="source">A <see cref="Uri"/> that represents the URL of the syndication resource XML data.</param>
        /// <param name="options">A <see cref="WebRequestOptions"/> that holds options that should be applied to web requests.</param>
        /// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the <see cref="GenericSyndicationFeed"/> instance. This value can be <b>null</b>.</param>
        /// <returns>An <see cref="GenericSyndicationFeed"/> object loaded using the <paramref name="source"/> data.</returns>
        /// <exception cref="ArgumentNullException">The <paramref name="source"/> is a null reference (Nothing in Visual Basic).</exception>
        /// <exception cref="FormatException">The <paramref name="source"/> data does not conform to the expected syndication content format. In this case, the feed remains empty.</exception>
        public static GenericSyndicationFeed Create(Uri source, WebRequestOptions options, SyndicationResourceLoadSettings settings)
        {
            //------------------------------------------------------------
            //	Local members
            //------------------------------------------------------------
            GenericSyndicationFeed syndicationResource  = new GenericSyndicationFeed();

            //------------------------------------------------------------
            //	Validate parameters
            //------------------------------------------------------------
            Guard.ArgumentNotNull(source, "source");

            //------------------------------------------------------------
            //	Create new instance using supplied parameters
            //------------------------------------------------------------
            syndicationResource.Load(source, options, settings);

            return syndicationResource;
        }
        //============================================================
        //    INSTANCE METHODS
        //============================================================
        /// <summary>
        /// Provides example code for the Load(Uri, ICredentials, IWebProxy) method
        /// </summary>
        public static void LoadUriExample()
        {
            #region Load(Uri source, ICredentials credentials, IWebProxy proxy)
            GenericSyndicationFeed feed = new GenericSyndicationFeed();
            Uri source                  = new Uri("http://feeds.feedburner.com/OppositionallyDefiant");

            feed.Load(source, CredentialCache.DefaultNetworkCredentials, null);

            foreach (GenericSyndicationItem item in feed.Items)
            {
                if (item.PublishedOn > DateTime.Now.Subtract(new TimeSpan(7, 0, 0, 0)))
                {
                    //  Process generic item's published in the last week
                }

                foreach (GenericSyndicationCategory category in item.Categories)
                {
                    if (String.Compare(category.Term, "WCF", StringComparison.OrdinalIgnoreCase) == 0)
                    {
                        //  Process item category
                    }
                }
            }
            #endregion
        }