在.NET 3.5中提供了一套全新的接口来实现对RSS和ATOM这两种数据文件的读写。非常方便。下面演示一下
1. 首先要添加一个引用System.ServiceModel.Web
using System.ServiceModel.Syndication;
using System.Xml;
2. 读取RSS的代码
/// <summary>
/// 从一个远程站点读取RSS
/// </summary>
///
<param name="sender"></param>
/// <param
name="e"></param>
private void btLoad_Click(object sender, EventArgs
e)
{
SyndicationFeed feed =
SyndicationFeed.Load(XmlReader.Create(feedaddress.Text));
var items = from item in
feed.Items
where
item.Title.Text.Contains("VSTS")
orderby item.PublishDate
descending
select new { Id = item.Id, Title = item.Title.Text };
dgvResult.DataSource = items.ToArray();
}
效果如下
3. 写入RSS的代码如下
/// <summary>
/// 构造一个RSS
/// </summary>
/// <param
name="sender"></param>
/// <param
name="e"></param>
private void btCreate_Click(object sender,
EventArgs e)
{
SyndicationFeed feed = new
SyndicationFeed(
"我的博客",
"陈希章的博客",
new Uri("http://www.xizhang.com/"),
new[]{
new
SyndicationItem("测试博客标题", "博客内容", new Uri("http://www.xizhang.com/test.aspx")),
new SyndicationItem("测试博客标题", "博客内容", new Uri("http://www.xizhang.com/test.aspx")),
new SyndicationItem("测试博客标题", "博客内容", new Uri("http://www.xizhang.com/test.aspx"))
}
);
XmlWriter xw =
XmlWriter.Create("rss.xml");
feed.SaveAsRss20(xw);
xw.Close();
}
效果如下
4. 结合ashx实现网站的RSS整合
using System;
using System.Web;
using System.Web.Services;
using
System.ServiceModel.Syndication;
using System.Xml;
namespace WebApplication1
{
///
<summary>
/// $codebehindclassname$
的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo =
WsiProfiles.BasicProfile1_1)]
public class RSS :
IHttpHandler
{
public void
ProcessRequest(HttpContext
context)
{
SyndicationFeed feed = new
SyndicationFeed(
"我的博客",
"陈希章的博客",
new Uri("http://www.xizhang.com/"),
new[]{
new SyndicationItem("测试博客标题", "博客内容", new Uri("http://www.xizhang.com/test.aspx")),
new SyndicationItem("测试博客标题", "博客内容", new Uri("http://www.xizhang.com/test.aspx")),
new SyndicationItem("测试博客标题", "博客内容", new Uri("http://www.xizhang.com/test.aspx"))
}
);
XmlWriter
xw =
XmlWriter.Create(context.Response.OutputStream);
feed.SaveAsRss20(xw);
xw.Close();
context.Response.End();
}
public bool
IsReusable
{
get
{
return
false;
}
}
}
}
在客户端读取的效果如下
5. 结合数据库的案例
using System;
using System.Web;
using System.Web.Services;
using
System.ServiceModel.Syndication;
using System.Xml;
using
System.Data;
using System.Linq;
namespace WebApplication1
{
///
<summary>
/// $codebehindclassname$
的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo =
WsiProfiles.BasicProfile1_1)]
public class RSS :
IHttpHandler
{
public void
ProcessRequest(HttpContext
context)
{
DataTable
tb = new
DataTable();
tb.Columns.AddRange(
new[]{
new
DataColumn("Title"),
new
DataColumn("Contents"),
new
DataColumn("Link")
});
//这里可以假设读取一些数据过来
var items
= from DataRow row in
tb.Rows
select new SyndicationItem(row.Field<string>(0),
row.Field<string>(1), new Uri(row.Field<string>(2)));
SyndicationFeed feed = new
SyndicationFeed(
"我的博客",
"陈希章的博客",
new Uri("http://www.xizhang.com/"),
items.ToArray()
);
XmlWriter
xw =
XmlWriter.Create(context.Response.OutputStream);
feed.SaveAsRss20(xw);
xw.Close();
context.Response.End();
}
public bool
IsReusable
{
get
{
return
false;
}
}
}
}
原文地址：http://www.cnblogs.com/chenxizhang/archive/2009/07/16/1525000.html
.NET 3.5 : 读写RSS或者ATOM,布布扣,bubuko.com