需要获得Rss Feed计数(即每个站点5个Feed)

本文关键字：Feed 站点 5个 计数 Rss | 更新日期: 2023-09-27 18:23:50

我从我的数据库中获得Rss-Feed，但我获得了所有的Feed，每次在DB Data中运行代码时都会添加。显示我需要在计数中显示Rss馈送，以及如何忽略数据库中已经添加的馈送和我在中继器控制中显示的源代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml;
using System.Text;
using System.Data.SqlClient;
using System.Web.UI.HtmlControls;
using System.Web.Security;
using System.Data;
public partial class _Default : System.Web.UI.Page
{
    RssDC rssDC = new RssDC();
    RssBAL rssBAL = new RssBAL();
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack) { 
        //List<RSSFeed> rssFeedList = new List<RSSFeed>();
        //var item = BlogFeeds("http://rss.cnn.com/rss/edition_americas.rss",  3, rssFeedList);
        //var item2 = BlogFeeds("http://feeds.bbci.co.uk/news/rss.xml?edition=int#",  3, rssFeedList);
        //var item3 = BlogFeeds("http://feeds.reuters.com/reuters/Election2012", 3, rssFeedList);
        //Repeater1.DataSource = item3;
        //Repeater1.DataBind();
        BlogFeeds("http://rss.cnn.com/rss/edition_americas.rss", 3);
        fillRssFeeds();
        }
    }
    private void fillRssFeeds()
    {        
        DataSet ds = new DataSet();
        ds = rssBAL.GetRssFeeds(rssDC);
        Repeater1.DataSource = ds;
        Repeater1.DataBind();
    }
    protected void BlogFeeds(string url,  int count)
    {
        try
        {
            RssDC rssDC = new RssDC();
            XmlDocument xmldoc = new XmlDocument();
            XmlNodeList items = default(XmlNodeList);
            xmldoc.Load(url);
            items = xmldoc.SelectNodes("/rss/channel/item");
            // use XPath to get only items
            foreach (XmlNode item1 in items)
            {
                foreach (XmlNode node1 in item1.ChildNodes)
                {
                    if (node1.Name == "title")
                    {
                        rssDC.Title = node1.InnerText;
                    }
                    else if (node1.Name == "link")
                    {
                        rssDC.Link = node1.InnerText;
                    }
                    else if(node1.Name == "guid")
                    {
                        rssDC.RSS_ID = node1.InnerText;
                    }
                    else if (node1.Name == "description")
                    {
                        rssDC.Description = node1.InnerText;
                    }
                    else if (node1.Name == "pubDate")
                    {
                        rssDC.DatePublished = node1.InnerText;
                    }

                }
                rssDC = RssBAL.AddRssFeed(rssDC);

            }
        }
        catch (Exception eax)
        {
            //return;
        }
        //return rssFeedList;
        //Repeater1.DataSource = rssFeedList;
        //Repeater1.DataBind();
    }

需要获得Rss Feed计数(即每个站点5个Feed)

如果你只想根据从BlogFeeds（）提供的输入参数检索一定数量的文章，你可以尝试这样的方法：

foreach (XmlNode item1 in items)
            {
                int currentIterationIndex = 0;
                foreach (XmlNode node1 in item1.ChildNodes)
                {
                    if(currentIterationIndex >= count -1)
                    {
                        continue; //or break; would probably be better.
                    }
                    if (node1.Name == "title")
                    {
                        rssDC.Title = node1.InnerText;
                    }
                    else if (node1.Name == "link")
                    {
                        rssDC.Link = node1.InnerText;
                    }
                    else if(node1.Name == "guid")
                    {
                        rssDC.RSS_ID = node1.InnerText;
                    }
                    else if (node1.Name == "description")
                    {
                        rssDC.Description = node1.InnerText;
                    }
                    else if (node1.Name == "pubDate")
                    {
                        rssDC.DatePublished = node1.InnerText;
                    }
                    currentIterationIndex += 1;
                }
                rssDC = RssBAL.AddRssFeed(rssDC);

            }
        }
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