需要获得计数RSS供稿(即每个站点5供稿) [英] need to get Rss Feed in count (i.e per site 5 feeds)
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问题描述
我从我的数据库获取行业信息,但我得到的所有的饲料,每次当我在DB数据运行我的code为adding.Show我需要显示RSS提要计数以及如何忽略已添加饲料在DB和源$ C $ CI正在显示Repeater控件
使用系统;
使用System.Collections.Generic;
使用System.Linq的;
使用的System.Web;
使用System.Web.UI程序;
使用System.Web.UI.WebControls;
使用的System.Xml;
使用System.Text;
使用System.Data.SqlClient的;
使用System.Web.UI.HtmlControls;
使用System.Web.Security;
使用System.Data这;公共部分类_Default:System.Web.UI.Page
{
RssDC rssDC =新RssDC();
RssBAL rssBAL =新RssBAL();
保护无效的Page_Load(对象发件人,EventArgs的发送)
{
如果(!的IsPostBack){
//列表<&RSSFeed中GT; rssFeedList =新的List<&RSSFeed中GT;();
// VAR项目= 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项目3 = BlogFeeds(http://feeds.reuters.com/reuters/Election2012,3,rssFeedList);
//Repeater1.DataSource =项目3;
//Repeater1.DataBind(); BlogFeeds(http://rss.cnn.com/rss/edition_americas.rss,3); fillRssFeeds();
} } 私人无效fillRssFeeds()
{
DataSet的DS =新的DataSet();
DS = rssBAL.GetRssFeeds(rssDC); Repeater1.DataSource = DS;
Repeater1.DataBind();
}
保护无效BlogFeeds(字符串URL,诠释计数)
{ 尝试
{ RssDC rssDC =新RssDC();
XmlDocument的xmlDoc中=新的XmlDocument();
XmlNodeList中的项目=默认(XmlNodeList中);
xmldoc.Load(URL);
项目= xmldoc.SelectNodes(/ RSS /渠道/项目); //使用XPath只得到项目 的foreach(在项目XmlNode的ITEM1)
{ 的foreach(在item1.ChildNodes XmlNode的节点1)
{
如果(node1.Name ==题)
{
rssDC.Title = node1.InnerText;
}
否则,如果(node1.Name ==链接)
{
rssDC.Link = node1.InnerText;
}
否则,如果(node1.Name ==GUID)
{
rssDC.RSS_ID = node1.InnerText;
}
否则,如果(node1.Name ==说明)
{
rssDC.Description = node1.InnerText;
}
否则,如果(node1.Name ==pubdate的)
{
rssDC.DatePublished = node1.InnerText;
}
}
rssDC = RssBAL.AddRssFeed(rssDC);
} }
赶上(例外EAX)
{
//返回;
} //返回rssFeedList;
//Repeater1.DataSource = rssFeedList;
//Repeater1.DataBind();
}
解决方案
如果您只需要一定数量的检索文章的基础上,从BlogFeeds()提供输入参数,你可以尝试这样的事:
的foreach(在项目XmlNode的ITEM1)
{
INT currentIterationIndex = 0; 的foreach(在item1.ChildNodes XmlNode的节点1)
{
如果(currentIterationIndex> =计数-1)
{
继续; //或折断;可能会更好。
} 如果(node1.Name ==题)
{
rssDC.Title = node1.InnerText;
}
否则,如果(node1.Name ==链接)
{
rssDC.Link = node1.InnerText;
}
否则,如果(node1.Name ==GUID)
{
rssDC.RSS_ID = node1.InnerText;
}
否则,如果(node1.Name ==说明)
{
rssDC.Description = node1.InnerText;
}
否则,如果(node1.Name ==pubdate的)
{
rssDC.DatePublished = node1.InnerText;
} currentIterationIndex + = 1;
}
rssDC = RssBAL.AddRssFeed(rssDC);
} }
i am getting Rss Feed from my DB but i am getting all feeds and everytime when i run my code in DB Data is adding.Show i need to show Rss Feed in Count and how to ignore the already added feed in DB and in source code i am showing in Repeater control
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();
}
解决方案
If you only want a certain number of articles retrieved, based on the input parameter you supply from BlogFeeds(), you could try something like this:
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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