SyndicationFeed.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / NetFx35 / System.ServiceModel.Web / System / ServiceModel / Syndication / SyndicationFeed.cs / 1 / SyndicationFeed.cs
                        
                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.ServiceModel.Syndication 
{
    using System; 
    using System.Collections.Generic; 
    using System.Collections.ObjectModel;
    using System.Text; 
    using System.Xml;
    using System.Runtime.Serialization;
    using System.Globalization;
    using System.Xml.Serialization; 
    using System.Diagnostics.CodeAnalysis;
 
    // NOTE: This class implements Clone so if you add any members, please update the copy ctor 
    public class SyndicationFeed : IExtensibleSyndicationObject
    { 
        Collection authors;
        Uri baseUri;
        Collection categories;
        Collection contributors; 
        TextSyndicationContent copyright;
        TextSyndicationContent description; 
        ExtensibleSyndicationObject extensions = new ExtensibleSyndicationObject(); 
        string generator;
        string id; 
        Uri imageUrl;
        IEnumerable items;
        string language;
        DateTimeOffset lastUpdatedTime; 
        Collection links;
        TextSyndicationContent title; 
 
        public SyndicationFeed()
            : this((IEnumerable) null) 
        {
        }

        public SyndicationFeed(IEnumerable items) 
            : this(null, null, null, items)
        { 
        } 

        public SyndicationFeed(string title, string description, Uri feedAlternateLink) 
            : this(title, description, feedAlternateLink, null)
        {
        }
 
        public SyndicationFeed(string title, string description, Uri feedAlternateLink, IEnumerable items)
            : this(title, description, feedAlternateLink, null, DateTimeOffset.MinValue, items) 
        { 
        }
 
        public SyndicationFeed(string title, string description, Uri feedAlternateLink, string id, DateTimeOffset lastUpdatedTime)
            : this(title, description, feedAlternateLink, id, lastUpdatedTime, null)
        {
        } 

        public SyndicationFeed(string title, string description, Uri feedAlternateLink, string id, DateTimeOffset lastUpdatedTime, IEnumerable items) 
        { 
            if (title != null)
            { 
                this.title = new TextSyndicationContent(title);
            }
            if (description != null)
            { 
                this.description = new TextSyndicationContent(description);
            } 
            if (feedAlternateLink != null) 
            {
                this.Links.Add(SyndicationLink.CreateAlternateLink(feedAlternateLink)); 
            }
            this.id = id;
            this.lastUpdatedTime = lastUpdatedTime;
            this.items = items; 
        }
 
        protected SyndicationFeed(SyndicationFeed source, bool cloneItems) 
        {
            if (source == null) 
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("source");
            }
            this.authors = FeedUtils.ClonePersons(source.authors); 
            this.categories = FeedUtils.CloneCategories(source.categories);
            this.contributors = FeedUtils.ClonePersons(source.contributors); 
            this.copyright = FeedUtils.CloneTextContent(source.copyright); 
            this.description = FeedUtils.CloneTextContent(source.description);
            this.extensions = source.extensions.Clone(); 
            this.generator = source.generator;
            this.id = source.id;
            this.imageUrl = source.imageUrl;
            this.language = source.language; 
            this.lastUpdatedTime = source.lastUpdatedTime;
            this.links = FeedUtils.CloneLinks(source.links); 
            this.title = FeedUtils.CloneTextContent(source.title); 
            this.baseUri = source.baseUri;
            IList srcList = source.items as IList; 
            if (srcList != null)
            {
                Collection tmp = new NullNotAllowedCollection();
                for (int i = 0; i < srcList.Count; ++i) 
                {
                    tmp.Add((cloneItems) ? srcList[i].Clone() : srcList[i]); 
                } 
                this.items = tmp;
            } 
            else
            {
                if (cloneItems)
                { 
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR2.GetString(SR2.UnbufferedItemsCannotBeCloned)));
                } 
                this.items = source.items; 
            }
        } 

        public Dictionary AttributeExtensions
        {
            get { return this.extensions.AttributeExtensions; } 
        }
 
        public Collection Authors 
        {
            get 
            {
                if (this.authors == null)
                {
                    this.authors = new NullNotAllowedCollection(); 
                }
                return authors; 
            } 
        }
 

        public Uri BaseUri
        {
            get { return this.baseUri; } 
            set { this.baseUri = value; }
        } 
 
        public Collection Categories
        { 
            get
            {
                if (this.categories == null)
                { 
                    this.categories = new NullNotAllowedCollection();
                } 
                return categories; 
            }
        } 

        public Collection Contributors
        {
            get 
            {
                if (this.contributors == null) 
                { 
                    this.contributors = new NullNotAllowedCollection();
                } 
                return contributors;
            }
        }
 
        public TextSyndicationContent Copyright
        { 
            get { return this.copyright; } 
            set { this.copyright = value; }
        } 

        public TextSyndicationContent Description
        {
            get { return this.description; } 
            set { this.description = value; }
        } 
 
        public SyndicationElementExtensionCollection ElementExtensions
        { 
            get { return this.extensions.ElementExtensions; }
        }

        public string Generator 
        {
            get { return generator; } 
            set { generator = value; } 
        }
 
        public string Id
        {
            get { return id; }
            set { id = value; } 
        }
 
        public Uri ImageUrl 
        {
            get { return imageUrl; } 
            set { imageUrl = value; }
        }

        public IEnumerable Items 
        {
            get 
            { 
                if (this.items == null)
                { 
                    this.items = new NullNotAllowedCollection();
                }
                return this.items;
            } 
            set
            { 
                if (value == null) 
                {
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value"); 
                }
                this.items = value;
            }
        } 

        public string Language 
        { 
            get { return language; }
            set { language = value; } 
        }

        public DateTimeOffset LastUpdatedTime
        { 
            get { return lastUpdatedTime; }
            set { lastUpdatedTime = value; } 
        } 

        public Collection Links 
        {
            get
            {
                if (this.links == null) 
                {
                    this.links = new NullNotAllowedCollection(); 
                } 
                return this.links;
            } 
        }

        public TextSyndicationContent Title
        { 
            get { return this.title; }
            set { this.title = value; } 
        } 

        public static SyndicationFeed Load(XmlReader reader) 
        {
            return Load(reader);
        }
 
        public static TSyndicationFeed Load(XmlReader reader)
            where TSyndicationFeed : SyndicationFeed, new () 
        { 
            if (reader == null)
            { 
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("reader");
            }
            Atom10FeedFormatter atomSerializer = new Atom10FeedFormatter();
            if (atomSerializer.CanRead(reader)) 
            {
                atomSerializer.ReadFrom(reader); 
                return atomSerializer.Feed as TSyndicationFeed; 
            }
            Rss20FeedFormatter rssSerializer = new Rss20FeedFormatter(); 
            if (rssSerializer.CanRead(reader))
            {
                rssSerializer.ReadFrom(reader);
                return rssSerializer.Feed as TSyndicationFeed; 
            }
            throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new XmlException(SR2.GetString(SR2.UnknownFeedXml, reader.LocalName, reader.NamespaceURI))); 
        } 

        public virtual SyndicationFeed Clone(bool cloneItems) 
        {
            return new SyndicationFeed(this, cloneItems);
        }
 
        public Atom10FeedFormatter GetAtom10Formatter()
        { 
            return new Atom10FeedFormatter(this); 
        }
 
        public Rss20FeedFormatter GetRss20Formatter()
        {
            return GetRss20Formatter(true);
        } 

        public Rss20FeedFormatter GetRss20Formatter(bool serializeExtensionsAsAtom) 
        { 
            return new Rss20FeedFormatter(this, serializeExtensionsAsAtom);
        } 

        public void SaveAsAtom10(XmlWriter writer)
        {
            this.GetAtom10Formatter().WriteTo(writer); 
        }
 
        public void SaveAsRss20(XmlWriter writer) 
        {
            this.GetRss20Formatter().WriteTo(writer); 
        }

        protected internal virtual SyndicationCategory CreateCategory()
        { 
            return new SyndicationCategory();
        } 
 
        protected internal virtual SyndicationItem CreateItem()
        { 
            return new SyndicationItem();
        }

        protected internal virtual SyndicationLink CreateLink() 
        {
            return new SyndicationLink(); 
        } 

        protected internal virtual SyndicationPerson CreatePerson() 
        {
            return new SyndicationPerson();
        }
 
        protected internal virtual bool TryParseAttribute(string name, string ns, string value, string version)
        { 
            return false; 
        }
 
        protected internal virtual bool TryParseElement(XmlReader reader, string version)
        {
            return false;
        } 

        protected internal virtual void WriteAttributeExtensions(XmlWriter writer, string version) 
        { 
            this.extensions.WriteAttributeExtensions(writer);
        } 

        protected internal virtual void WriteElementExtensions(XmlWriter writer, string version)
        {
            this.extensions.WriteElementExtensions(writer); 
        }
 
        internal void LoadElementExtensions(XmlReader readerOverUnparsedExtensions, int maxExtensionSize) 
        {
            this.extensions.LoadElementExtensions(readerOverUnparsedExtensions, maxExtensionSize); 
        }

        internal void LoadElementExtensions(XmlBuffer buffer)
        { 
            this.extensions.LoadElementExtensions(buffer);
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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