web2.0時(shí)是以blog，wike，tag，rss等技術(shù)為代表的以個(gè)性化為中心的新一代互聯(lián)網(wǎng)模式，rss比起blog等名詞似乎還不算太熱。但打開(kāi)網(wǎng)頁(yè)仍是遍布了rss,xml等醒目的圖標(biāo)，打開(kāi)頁(yè)面mathon瀏覽器也是一個(gè)勁的提示有新的rss連接，前一段一個(gè)項(xiàng)

目需要，自己寫(xiě)了一個(gè).net下面生成rss信息的類(lèi)，如下：

  1using system;
  2using system.xml;
  3using system.collections;
  4using system.globalization;
  5using system.web;
  6
  7namespace blrl
  8{
  9    /// <summary>
 10    /// summary description for rss.
 11    /// </summary>
 12    public class rss
 13    {
 14        const string dublincorenamespaceuri = @"http://purl.org/dc/elements/1.1/";
 15        const string slashnamespaceuri = @"http://purl.org/rss/1.0/modules/slash/";
 16        const string syndicationnamespaceuri = @"http://purl.org/rss/1.0/modules/syndication/";
 17        //rss頻道結(jié)構(gòu)
 18        struct rsschannel
 19        {
 20            public string title;//標(biāo)題
 21            public string link;//連接
 22            public string language;//語(yǔ)言           
 23            public string description;//描述
 24            public string webmaster;//發(fā)布者
 25        }
 26
 27        //rss圖片信息
 28        struct rssimage
 29        {
 30            public string url;//地址
 31            public string title;//標(biāo)題
 32            public int height ;//高度
 33            public int width;//長(zhǎng)度
 34        }
 35       
 36        //rss項(xiàng)結(jié)構(gòu)
 37        struct rssitem
 38        {
 39            public string title;//標(biāo)題
 40            public string catalog;//類(lèi)別
 41            public string link;//連接
 42            public datetime pubdate;//發(fā)布日期
 43            public string description;//描述
 44
 45        }
 46        public rss()
 47        {
 48            //
 49            // todo: add constructor logic here
 50            //
 51        }
 52        /// <summary>
 53        ///添加rss版本信息
 54        /// </summary>
 55        /// <param name="xmldocument"></param>
 56        /// <returns></returns>
 57        public static xmldocument  addrsspreamble( xmldocument xmldocument)
 58        {
 59            //聲明創(chuàng)建1.0版本得xml
 60            xmldeclaration xmldeclaration = xmldocument.createxmldeclaration("1.0", "utf-8", null);
 61            xmldocument.insertbefore(xmldeclaration, xmldocument.documentelement);
 62
 63            xmlelement rsselement = xmldocument.createelement("rss");
 64
 65            xmlattribute rssversionattribute = xmldocument.createattribute("version");
 66            rssversionattribute.innertext = "2.0";
 67            rsselement.attributes.append(rssversionattribute);
 68            xmldocument.appendchild(rsselement);
 69
 70          
 71            xmlattribute dubliccorenamespaceuriattribute = xmldocument.createattribute("xmlns:dc");
 72            dubliccorenamespaceuriattribute.innertext = dublincorenamespaceuri;
 73            rsselement.attributes.append(dubliccorenamespaceuriattribute);
 74
 75            xmlattribute slashnamespaceuriattribute = xmldocument.createattribute("xmlns:slash");
 76            slashnamespaceuriattribute.innertext = slashnamespaceuri;
 77            rsselement.attributes.append(slashnamespaceuriattribute);
 78
 79            xmlattribute syndicationnamespaceuriattribute = xmldocument.createattribute("xmlns:sy");
 80            syndicationnamespaceuriattribute.innertext = syndicationnamespaceuri;
 81            rsselement.attributes.append(syndicationnamespaceuriattribute);
 82
 83
 84            return xmldocument;
 85        }
 86       
 87        /// <summary>
 88        /// 添加頻道
 89        /// </summary>
 90        /// <param name="xmldocument"></param>
 91        /// <param name="channel"></param>
 92        /// <returns></returns>
 93        private static xmldocument addrsschannel( xmldocument xmldocument, rsschannel channel)
 94        {
 95            xmlelement channelelement = xmldocument.createelement("channel");
 96            xmlnode rsselement = xmldocument.selectsinglenode("rss");
 97
 98            rsselement.appendchild(channelelement);
 99
100            //添加標(biāo)題
101            xmlelement channeltitleelement = xmldocument.createelement("title");
102            channeltitleelement.innertext = channel.title;
103            channelelement.appendchild(channeltitleelement);
104
105            //添加連接
106            xmlelement channellinkelement = xmldocument.createelement("link");
107            channellinkelement.innertext = channel.link;
108            channelelement.appendchild(channellinkelement);
109
110            //添加描述
111            xmlelement channeldescriptionelement = xmldocument.createelement("description");
112            xmlcdatasection cdatadescriptionsection = xmldocument.createcdatasection(channel.description);
113            channeldescriptionelement.appendchild(cdatadescriptionsection);
114            channelelement.appendchild(channeldescriptionelement);
115           
116            //添加語(yǔ)言
117            xmlelement languageelement = xmldocument.createelement("language");
118            languageelement.innertext = channel.language;
119            channelelement.appendchild(languageelement);
120
121            //添加發(fā)布者
122            xmlelement webmasterelement = xmldocument.createelement("webmaster");
123            webmasterelement.innertext = channel.webmaster;
124            channelelement.appendchild(webmasterelement);
125
126            return xmldocument;
127        }
128
129
130        //添加rssimage
131        private static xmldocument addrssimage(xmldocument xmldocument, rssimage img)
132        {
133            xmlelement imgelement = xmldocument.createelement("image");
134            xmlnode channelelement = xmldocument.selectsinglenode("rss/channel"); 
135
136            //創(chuàng)建標(biāo)題
137            xmlelement imagetitleelement = xmldocument.createelement("title");
138            imagetitleelement.innertext = img.title;
139            imgelement.appendchild(imagetitleelement);
140
141            //創(chuàng)建地址
142            xmlelement imageurlelement = xmldocument.createelement("url");
143            imageurlelement.innertext = img.url;
144            imgelement.appendchild(imageurlelement);
145
146            //創(chuàng)建高度
147            xmlelement imageheightelement = xmldocument.createelement("height");
148            imageheightelement.innertext = img.height.tostring();
149            imgelement.appendchild(imageheightelement);
150
151            //創(chuàng)建長(zhǎng)度
152            xmlelement imagewidthelement = xmldocument.createelement("width");
153            imagewidthelement.innertext = img.width.tostring();
154            imgelement.appendchild(imagewidthelement);
155
156            //將圖像節(jié)點(diǎn)添加到頻道節(jié)點(diǎn)里面
157            channelelement.appendchild(imgelement);
158            return xmldocument;
159         
160        }
161
162
163        /// <summary>
164        /// 添加項(xiàng)信息
165        /// </summary>
166        /// <param name="xmldocument"></param>
167        /// <param name="item"></param>
168        /// <returns></returns>
169        private static xmldocument addrssitem (xmldocument xmldocument, rssitem item)
170        {
171            xmlelement itemelement = xmldocument.createelement("item");
172            xmlnode channelelement = xmldocument.selectsinglenode("rss/channel");
173
174            //創(chuàng)建標(biāo)題
175            xmlelement itemtitleelement = xmldocument.createelement("title");           
176            xmlcdatasection cdatatitlesection = xmldocument.createcdatasection(item.title);
177            itemtitleelement.appendchild(cdatatitlesection);           
178            itemelement.appendchild(itemtitleelement);
179
180            //創(chuàng)建日期
181            xmlelement pubdateelement = xmldocument.createelement("pubdate");
182            pubdateelement.innertext = xmlconvert.tostring(item.pubdate.touniversaltime(), "yyyy-mm-ddthh:mm:ss");
183            itemelement.appendchild(pubdateelement);
184           
185            //添加連接
186            xmlelement itemlinkelement = xmldocument.createelement("link");
187            itemlinkelement.innertext = item.link;
188            itemelement.appendchild(itemlinkelement);
189
190            //創(chuàng)建描述
191            xmlelement itemdescriptionelement = xmldocument.createelement("description");
192            xmlcdatasection cdatadescriptionsection = xmldocument.createcdatasection(item.description);           
193            itemdescriptionelement.appendchild(cdatadescriptionsection);
194            itemelement.appendchild(itemdescriptionelement);
195
196
197            //創(chuàng)建類(lèi)型
198            xmlelement itemcatalogelement = xmldocument.createelement("catalog");
199            itemcatalogelement.innertext = item.catalog;
200            itemelement.appendchild(itemcatalogelement);
201
202            //將rssitem添加到頻道節(jié)點(diǎn)里面
203            channelelement.appendchild(itemelement);
204
205            return xmldocument;
206        }
207   }
208}

　　根據(jù)特定的需要，可以先將數(shù)據(jù)讀取到列表里面，然后遍歷列表，調(diào)用上述方法，生成xml字符串。

　　這個(gè)字符串就是rs用到xml字符串了。也可以入aspx文件，然后用 <link type="application/rss+xml" rel="alternate" href="rssfeed.aspx">調(diào)用下rss文件，馬桶等軟件就會(huì)自動(dòng)提示有rrs信息了