如何添加CSS参考.NET SyndicationFeed？ [英] How to Add CSS Reference to .NET SyndicationFeed?

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问题描述

我创建了一个简单的SyndicationFeed与许多SyndicationItems。每个SyndicationItem都有HtmlContent。 HtmlContent是一个表。这显示确定，但现在我需要在表上最少的样式/填充。我相信我需要添加样式表引用

 <？xml-stylesheet type =text / csshref = http://you.com/rss.css？>

但我不知道如何使用.NET 4.5 SyndicationFeed或Atom10FeedFormatter类。 p>

这里是由WCF服务生成的（伪）代码。 

  var feed = new feed（......） 
 var xqn = new XmlQualifiedName（mysys，http://www.w3.org/2000/xmlns/）; 
 feed.AttributeExtensions.Add（xqn，myuri）; 
 feed.ElementExtensions.Add（creator，sys，teaminfo）; 
 feed.Authors.Add（new SyndicationPerson（emailaddr））; 
 feed.Categories.Add（new SyndicationCategory（mycategory））; 
 feed.Description = new TextSyndicationContent（feedDesc）; 
 feed.Copyright = SyndicationContent.CreatePlaintextContent（copyr）; 
 feed.Language =en-us; 
 feed.ImageUrl = new Uri（myuri +/ logo）; 
 var dbitems = GetListFromDb（key）; 
 var syndItems = new List< synitem>（）; 
 foreach（dbitems中的var项）
 {
 var htmlContent = 
 SyndicationContent.CreateHtmlContent（MakeHtmlFromStuff（item））; 
 var itemUri = new Uri（myuri + itemuri）; 
 var synitem = new synitem（item.code，htmlContent，itemUri，item.key，DateTimeOffset.UtcNow）; 
 syndItems.Add（synitem）; 
} 
 feed.Items = syndItems; 
 return new Atom10FeedFormatter（feed）;

希望不会遗漏任何明显的东西。



感谢。

解决方案


我相信我需要添加一个样式表引用

 <？xml-stylesheet type =text / css href =http://you.com/rss.css？>

但我不知道如何使用.NET 4.5 SyndicationFeed或
Atom10FeedFormatter



这里是一个完整的代码示例： b 

 使用System; 
 using System.Collections.Generic; 
 using System.ServiceModel.Syndication; 
 using System.Xml; 
 
命名空间FeedProcessing 
 {
类FeedProcessing 
 {
 static void Main（string [] args）
 {
 FeedProcessing fp = new FeedProcessing（）; 
 fp.CreateFeed（）; 
} 
 public void CreateFeed（）
 {
 SyndicationFeed feed = new SyndicationFeed（Feed Title，Feed Description，new Uri（http：// Feed / Alternate / Link），FeedID，DateTime.Now）; 
 //添加自定义属性。 
 XmlQualifiedName xqName = new XmlQualifiedName（CustomAttribute）; 
 feed.AttributeExtensions.Add（xqName，Value）; 
 
 SyndicationPerson sp = new SyndicationPerson（jesper@contoso.com，Jesper Aaberg，http：// Jesper / Aaberg）; 
 feed.Authors.Add（sp）; 
 
 SyndicationCategory category = new SyndicationCategory（FeedCategory，CategoryScheme，CategoryLabel）; 
 feed.Categories.Add（category）; 
 
 feed.Contributors.Add（new SyndicationPerson（lene@contoso.com，Lene Aaling，http：// lene / aaling））; 
 feed.Copyright = new TextSyndicationContent（Copyright 2007）; 
 feed.Description = new TextSyndicationContent（This is a sample feed）; 
 
 //添加自定义元素。 
 XmlDocument doc = new XmlDocument（）; 
 XmlElement feedElement = doc.CreateElement（CustomElement）; 
 feedElement.InnerText =一些文本; 
 feed.ElementExtensions.Add（feedElement）; 
 
 feed.Generator =示例代码; 
 feed.Id =FeedID; 
 feed.ImageUrl = new Uri（http：//server/image.jpg）; 
 
 TextSyndicationContent textContent = new TextSyndicationContent（Some text content）; 
 SyndicationItem item = new SyndicationItem（Item Title，textContent，new Uri（http：// server / items），ItemID，DateTime.Now）; 
 
 List< SyndicationItem> items = new List< SyndicationItem>（）; 
 items.Add（item）; 
 feed.Items = items; 
 
 feed.Language =en-us; 
 feed.LastUpdatedTime = DateTime.Now; 
 
 SyndicationLink link = new SyndicationLink（new Uri（http：// server / link），alternate，Link Title，text / html，1000）; 
 feed.Links.Add（link）; 
 
 XmlWriter atomWriter = XmlWriter.Create（atom.xml）; 
 atomWriter.WriteProcessingInstruction（xml-stylesheet，
type ='text / css'href ='http：//you.com/rss.css'）; 
 Atom10FeedFormatter atomFormatter = new Atom10FeedFormatter（feed）; 
 atomFormatter.WriteTo（atomWriter）; 
 atomWriter.Close（）; 
 
 XmlWriter rssWriter = XmlWriter.Create（rss.xml）; 
 rssWriter.WriteProcessingInstruction（xml-stylesheet，
type ='text / css'href ='http：//you.com/rss.css'）; 
 Rss20FeedFormatter rssFormatter = new Rss20FeedFormatter（feed）; 
 rssFormatter.WriteTo（rssWriter）; 
 rssWriter.Close（）; 
} 
} 
}

：



 <？xml version =1.0encoding =utf-8？> 
<？xml-stylesheet type ='text / css'href ='http：//you.com/rss.css'？> 
< feed xml：lang =en-usCustomAttribute =Valuexmlns =http://www.w3.org/2005/Atom> 
< title type =text> Feed标题< / title> 
< subtitle type =text>这是一个示例Feed< / subtitle> 
< id> FeedID< / id> 
< rights type =text>版权所有2007< / rights> 
< updated> 2012-12-28T19：50：18-08：00< / updated> 
< category term =FeedCategorylabel =CategoryLabelscheme =CategoryScheme/> 
< logo> http：//server/image.jpg< / logo> 
< author> 
< name> Jesper Aaberg< / name> 
< uri> http：// Jesper / Aaberg< / uri> 
< email> jesper@contoso.com< / email> 
< / author> 
< contributor> 
< name> Lene Aaling< / name> 
< uri> http：// lene / aaling< / uri> 
< email> lene@contoso.com< / email> 
< / contributor> 
< generator>示例代码< / generator> 
< link rel =alternatehref =http：// feed / Alternate / Link/> 
< link rel =alternatetype =text / htmltitle =Link Titlelength =1000href =http：// server / link/& 
< CustomElement xmlns =>一些文本< / CustomElement> 
< entry> 
< id> ItemID< / id> 
< title type =text>项目标题< / title> 
< updated> 2012-12-28T19：50：18-08：00< / updated> 
< link rel =alternatehref =http：// server / items/> 
< content type =text>部分文字内容< / content> 
< / entry> 
< / feed>

和 rss.xml ：

 <？xml version =1.0encoding =utf-8？> 
<？xml-stylesheet type ='text / css'href ='http：//you.com/rss.css'？> 
< rss xmlns：a10 =http://www.w3.org/2005/Atomversion =2.0> 
< channel CustomAttribute =Value> 
< title> Feed标题< / title> 
< link> http：// feed / Alternate / Link< / link> 
< description>这是一个示例Feed< / description> 
< language> en-us< / language> 
< copyright>版权所有2007< / copyright> 
< manageEditor> jesper@contoso.com< / manageEditor> 
< lastBuildDate> Fri，28 Dec 2012 19:50:18 -0800< / lastBuildDate> 
< category domain =CategoryScheme> FeedCategory< / category> 
< generator>示例代码< / generator> 
< a10：contributor> 
< a10：name> Lene Aaling< / a10：name> 
< a10：uri> http：// lene / aaling< / a10：uri> 
< a10：email> lene@contoso.com< / a10：email> 
< / a10：contributor> 
< image> 
< url> http：//server/image.jpg< / url> 
< title> Feed标题< / title> 
< link> http：// feed / Alternate / Link< / link> 
< / image> 
< a10：id> FeedID< / a10：id> 
< a10：link rel =alternatetype =text / htmltitle =Link Titlelength =1000href =http：// server / link/& 
< CustomElement>一些文本< / CustomElement> 
< item> 
< guid isPermaLink =false> ItemID< / guid> 
< link> http：// server / items< / link> 
< title>项目标题< / title> 
< description>一些文字内容< / description> 
< a10：updated> 2012-12-28T19：50：18-08：00< / a10：updated> 
< / item> 
< / channel> 
< / rss>

说明：



每当 XmlWriter 实例，但在调用之前：

  atomFormatter。 WriteTo（atomWriter）;

或：

 code> rssFormatter.WriteTo（rssWriter）;

调用 WriteProcessingInstruction（） 实例，传递两个必需的参数 - PI的名称（在这种情况下xml-stylesheet）和PI的文本code>type ='text / css'href ='http：//you.com/rss.css'）。


I have created a simple SyndicationFeed with many SyndicationItems. Each SyndicationItem has HtmlContent. The HtmlContent is a table. This displays OK, but now I need a minimum of styling/padding on the table. I believe I need to add a stylesheet reference like

<?xml-stylesheet type="text/css" href="http://you.com/rss.css" ?>

But I do not see how to do this with the .NET 4.5 SyndicationFeed or Atom10FeedFormatter classes.

Here is the (pseudo) code that is generated by a WCF service. 

var feed = new feed(......);
var xqn = new XmlQualifiedName( "mysys" , "http://www.w3.org/2000/xmlns/" );
feed.AttributeExtensions.Add( xqn , myuri );
feed.ElementExtensions.Add( "creator" , "sys" , teaminfo );
feed.Authors.Add( new SyndicationPerson( emailaddr) );
feed.Categories.Add( new SyndicationCategory( mycategory ) );
feed.Description = new TextSyndicationContent( feedDesc );
feed.Copyright = SyndicationContent.CreatePlaintextContent(copyr);
feed.Language = "en-us";
feed.ImageUrl = new Uri( myuri + "/logo" );
var dbitems = GetListFromDb(key);
var syndItems = new List<synitem>();
foreach (var item in dbitems)
{
    var htmlContent =
        SyndicationContent.CreateHtmlContent( MakeHtmlFromStuff(item) );
    var itemUri = new Uri( myuri + itemuri );
    var synitem = new synitem( item.code , htmlContent , itemUri , item.key , DateTimeOffset.UtcNow );
    syndItems.Add( synitem);
}
feed.Items = syndItems;
return new Atom10FeedFormatter(feed);

Hopefully not missing something obvious. All ideas appreciated.

Thanks.

解决方案

I believe I need to add a stylesheet reference like

<?xml-stylesheet type="text/css" href="http://you.com/rss.css" ?>

But I do not see how to do this with the .NET 4.5 SyndicationFeed or Atom10FeedFormatter classes.

Here is a complete code example how to do this:

using System;
using System.Collections.Generic;
using System.ServiceModel.Syndication;
using System.Xml;

namespace FeedProcessing
{
    class FeedProcessing
    {
        static void Main(string[] args)
        {
            FeedProcessing fp = new FeedProcessing();
            fp.CreateFeed();
        }
        public void CreateFeed()
        {
            SyndicationFeed feed = new SyndicationFeed("Feed Title", "Feed Description", new Uri("http://Feed/Alternate/Link"), "FeedID", DateTime.Now);
            // Add a custom attribute.
            XmlQualifiedName xqName = new XmlQualifiedName("CustomAttribute");
            feed.AttributeExtensions.Add(xqName, "Value");

            SyndicationPerson sp = new SyndicationPerson("jesper@contoso.com", "Jesper Aaberg", "http://Jesper/Aaberg");
            feed.Authors.Add(sp);

            SyndicationCategory category = new SyndicationCategory("FeedCategory", "CategoryScheme", "CategoryLabel");
            feed.Categories.Add(category);

            feed.Contributors.Add(new SyndicationPerson("lene@contoso.com", "Lene Aaling", "http://lene/aaling"));
            feed.Copyright = new TextSyndicationContent("Copyright 2007");
            feed.Description = new TextSyndicationContent("This is a sample feed");

            // Add a custom element.
            XmlDocument doc = new XmlDocument();
            XmlElement feedElement = doc.CreateElement("CustomElement");
            feedElement.InnerText = "Some text";
            feed.ElementExtensions.Add(feedElement);

            feed.Generator = "Sample Code";
            feed.Id = "FeedID";
            feed.ImageUrl = new Uri("http://server/image.jpg");

            TextSyndicationContent textContent = new TextSyndicationContent("Some text content");
            SyndicationItem item = new SyndicationItem("Item Title", textContent, new Uri("http://server/items"), "ItemID", DateTime.Now);

            List<SyndicationItem> items = new List<SyndicationItem>();
            items.Add(item);
            feed.Items = items;

            feed.Language = "en-us";
            feed.LastUpdatedTime = DateTime.Now;

            SyndicationLink link = new SyndicationLink(new Uri("http://server/link"), "alternate", "Link Title", "text/html", 1000);
            feed.Links.Add(link);

            XmlWriter atomWriter = XmlWriter.Create("atom.xml");
            atomWriter.WriteProcessingInstruction("xml-stylesheet", 
                                                  "type='text/css' href='http://you.com/rss.css'");
            Atom10FeedFormatter atomFormatter = new Atom10FeedFormatter(feed);
            atomFormatter.WriteTo(atomWriter);
            atomWriter.Close();

            XmlWriter rssWriter = XmlWriter.Create("rss.xml");
            rssWriter.WriteProcessingInstruction("xml-stylesheet",
                                                 "type='text/css' href='http://you.com/rss.css'");
            Rss20FeedFormatter rssFormatter = new Rss20FeedFormatter(feed);
            rssFormatter.WriteTo(rssWriter);
            rssWriter.Close();
        }
    }
}

When this program is executed, two files are created:

atom.xml:

<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type='text/css' href='http://you.com/rss.css'?>
<feed xml:lang="en-us" CustomAttribute="Value" xmlns="http://www.w3.org/2005/Atom">
    <title type="text">Feed Title</title>
    <subtitle type="text">This is a sample feed</subtitle>
    <id>FeedID</id>
    <rights type="text">Copyright 2007</rights>
    <updated>2012-12-28T19:50:18-08:00</updated>
    <category term="FeedCategory" label="CategoryLabel" scheme="CategoryScheme" />
    <logo>http://server/image.jpg</logo>
    <author>
        <name>Jesper Aaberg</name>
        <uri>http://Jesper/Aaberg</uri>
        <email>jesper@contoso.com</email>
    </author>
    <contributor>
        <name>Lene Aaling</name>
        <uri>http://lene/aaling</uri>
        <email>lene@contoso.com</email>
    </contributor>
    <generator>Sample Code</generator>
    <link rel="alternate" href="http://feed/Alternate/Link" />
    <link rel="alternate" type="text/html" title="Link Title" length="1000" href="http://server/link" />
    <CustomElement xmlns="">Some text</CustomElement>
    <entry>
        <id>ItemID</id>
        <title type="text">Item Title</title>
        <updated>2012-12-28T19:50:18-08:00</updated>
        <link rel="alternate" href="http://server/items" />
        <content type="text">Some text content</content>
    </entry>
</feed>

and rss.xml:

<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type='text/css' href='http://you.com/rss.css'?>
<rss xmlns:a10="http://www.w3.org/2005/Atom" version="2.0">
    <channel CustomAttribute="Value">
        <title>Feed Title</title>
        <link>http://feed/Alternate/Link</link>
        <description>This is a sample feed</description>
        <language>en-us</language>
        <copyright>Copyright 2007</copyright>
        <managingEditor>jesper@contoso.com</managingEditor>
        <lastBuildDate>Fri, 28 Dec 2012 19:50:18 -0800</lastBuildDate>
        <category domain="CategoryScheme">FeedCategory</category>
        <generator>Sample Code</generator>
        <a10:contributor>
            <a10:name>Lene Aaling</a10:name>
            <a10:uri>http://lene/aaling</a10:uri>
            <a10:email>lene@contoso.com</a10:email>
        </a10:contributor>
        <image>
            <url>http://server/image.jpg</url>
            <title>Feed Title</title>
            <link>http://feed/Alternate/Link</link>
        </image>
        <a10:id>FeedID</a10:id>
        <a10:link rel="alternate" type="text/html" title="Link Title" length="1000" href="http://server/link" />
        <CustomElement>Some text</CustomElement>
        <item>
            <guid isPermaLink="false">ItemID</guid>
            <link>http://server/items</link>
            <title>Item Title</title>
            <description>Some text content</description>
            <a10:updated>2012-12-28T19:50:18-08:00</a10:updated>
        </item>
    </channel>
</rss>

Explanation:

Whenever the XmlWriter instance is created, but before calling either:

atomFormatter.WriteTo(atomWriter);

or:

rssFormatter.WriteTo(rssWriter);

call the WriteProcessingInstruction() method on the respective XmlWriter instance, passing to it the two required parameters -- the name of the PI (in this case "xml-stylesheet") and the text of the PI (in this case "type='text/css' href='http://you.com/rss.css'").

这篇关于如何添加CSS参考.NET SyndicationFeed？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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