这个网站www.samachar.com如何使用 google news rss？
我正在寻找用 asp.net 编码的这个功能。我有一个代码，但它不适用于谷歌新闻 rss。
代码：
public void CreateRSS(String Path, int maxitem1, string opennewwindow,String lengthoof_decs)
{
XmlDocument doc = null;
XmlTextReader rssReader = null;
Label doclbl = null;
Label snolbl = null;
try
{
try
{
rssReader = new XmlTextReader(Path);
}
catch (Exception)
{
return;
}
if (rssReader == null)
{
return;
}
doc = new XmlDocument();
try
{
doc.Load(rssReader);
}
catch (Exception)
{
return;
}
if (doc == null)
{
return;
}
ReadDoc(doc, maxitem1, opennewwindow, lengthoof_decs);
}
catch (Exception)
{
throw;
}
finally
{
doc = null;
rssReader = null;
doclbl = null;
snolbl = null;
}
}
public void ReadDoc(XmlDocument rssDoc, int maxitem2, string opennewwindow, string lengthoof_decs)
{
DataTable dt = new DataTable();
int maxitems = 0; ;
dt.Columns.Add("title");
dt.Columns.Add("desc");
dt.Columns.Add("url");
XmlNode nodeRss = null;
XmlNode nodeChannel = null;
XmlNode nodeItem = null;
try
{
if (rssDoc == null)
{
return;
}
// Loop for the <rss> tag
for (int i = 0; i < rssDoc.ChildNodes.Count; i++)
{
// If it is the rss tag
if (rssDoc.ChildNodes[i].Name == "rss")
{
nodeRss = rssDoc.ChildNodes[i];
break;
}
}
if (nodeRss == null)
{
return;
}
for (int i = 0; i < nodeRss.ChildNodes.Count; i++)
{
if (nodeRss.ChildNodes[i].Name == "channel")
{
nodeChannel = nodeRss.ChildNodes[i];
break;
}
}
if (nodeChannel == null)
{
return;
}
// Loop for the <title>, <link>, <description> and all the other tags
for (int i = 0; i < nodeChannel.ChildNodes.Count; i++)
{
string title = "";
string desc = "";
string url="";
if (nodeChannel.ChildNodes[i].Name == "item")
{
nodeItem = nodeChannel.ChildNodes[i];
if (nodeItem["title"] != null)
{
title = nodeItem.InnerXml.ToString(); ;
int Pos1 = title.IndexOf("<title>") + "<title>".Length;
int Pos2 = title.IndexOf("</title>");
title = title.Substring(Pos1, Pos2 - Pos1);
//<![CDATA[
title= title.Replace("CDATA", "").Replace ("%","").Replace("<", "").Replace("!", "").Replace("[", "").Replace("<![CDATA[", "").Replace(" ", "").Replace("]]>", "").Replace("]", "").Replace(">", "");
}
if (nodeItem["description"] != null) {
desc = nodeItem.InnerXml.ToString(); ;
int Pos1 = desc.IndexOf("<description>") + "<description>".Length;
int Pos2 = desc.IndexOf("</description>");
desc = desc.Substring(Pos1, Pos2 - Pos1);
////////////////////////////////////////////
try
{
int g1 = desc.IndexOf("<img");
int g2 = desc.IndexOf(">") + ">".Length;
if (g1 > -1 && g2 > -1)
{
string desc1 = desc;
desc1 = desc1.Substring(g1, g2 - g1);
desc = desc.Replace(desc1, "");
}
}
catch (Exception ehge)
{
}
try
{
int g1 = desc.IndexOf("<img");
int g2 = desc.IndexOf(">") + ">".Length;
if (g1 > -1 && g2 > -1)
{
string desc1 = desc;
desc1 = desc1.Substring(g1, g2 - g1);
desc = desc.Replace(desc1, "");
}
}
catch (Exception ehge)
{
}
try
{
int g1 = desc.IndexOf("<img");
int g2 = desc.LastIndexOf(">")+">".Length;
if (g1 > -1 && g2 > -1)
{
string desc1 = desc;
desc1 = desc1.Substring(g1, g2 - g1);
desc = desc.Replace(desc1, "");
}
}
catch (Exception ehge)
{
}
for (int d = 0; d <= 5; d++)
{
try
{
int g1 = desc.IndexOf("<");
int g2 = desc.IndexOf(">") + ">".Length;
if (g1 > -1 && g2 > -1)
{
string desc1 = desc;
desc1 = desc1.Substring(g1, g2 - g1);
desc = desc.Replace(desc1, "");
}
}
catch (Exception ehge)
{
}
}
for (int d = 0; d <= 5; d++)
{
try
{
int g1 = desc.IndexOf("<");
int g2 = desc.IndexOf(">") + ">".Length;
if (g1 > -1 && g2 > -1)
{
string desc1 = desc;
desc1 = desc1.Substring(g1, g2 - g1);
desc = desc.Replace(desc1, "");
}
}
catch (Exception ehge)
{
}
}
////////////////////////////////////////////
desc = desc.Replace("CDATA", "").Replace("<", "").Replace ("%","").Replace("!", "").Replace("[", "").Replace("<![CDATA[", "").Replace(" ", "").Replace("]]>", "").Replace("]", "").Replace(">", ""); ;
if (lengthoof_decs.Trim() != "ALL")
{
try
{
string tempdesc = desc;
tempdesc = tempdesc.Substring(0, Convert.ToInt16(lengthoof_decs));
tempdesc = tempdesc + " ..".Replace("CDATA", "").Replace("<", "").Replace("!", "").Replace("[", "").Replace("<![CDATA[", "").Replace(" ", "").Replace("]]>", "").Replace("]", "").Replace(">", "");
desc = tempdesc;
}
catch (Exception ee)
{
// desc = desc.Substring(Pos1, Pos2 - Pos1);
}
}
url = nodeItem.InnerXml.ToString(); ;
Pos1 = url.IndexOf("<link>") + "<link>".Length;
Pos2 = url.IndexOf("</link>");
url = url.Substring(Pos1, Pos2 - Pos1);
url = url.Replace("amp;", "").Replace("CDATA", "").Replace("<", "").Replace("!", "").Replace("[", "").Replace("<![CDATA[", "").Replace(" ", "").Replace("]]>", "").Replace("]", "").Replace(">", "");
}
if (nodeItem["pubDate"] != null) {
}
DataRow dr = dt.NewRow();
dr["title"] = title;
dr["desc"] = desc;
dr["url"] = "http://www.desikhabar.in/show/?move="+url;
dt.Rows.Add(dr);
maxitems = maxitems + 1;
if (maxitems == maxitem2 )
{ break; }
}
}
}
catch (Exception)
{
throw;
}
finally
{
this.abc(dt, maxitem2, opennewwindow, lengthoof_decs);
}
}
public void abc(DataTable dt, int maxiem, string opennewwindow, string lengthoof_decs)
{
try
{
if (opennewwindow == "1")
{
for (int i = 0; i < maxiem; i++)
{
opennewwindow = "_blank";
Response.Write(" <li> <a target='" + opennewwindow + "' class='h-linkn' href='" + dt.Rows[i]["url"].ToString() + "' title='" + dt.Rows[i]["title"].ToString().Replace("'", " ") + "'>" + dt.Rows[i]["title"].ToString() + "</a> </li>");
if (lengthoof_decs.Trim () !="0")
{
Response.Write(" <p>"+dt.Rows[i]["desc"].ToString ()+"</p> ");
}
}
}
else
{
for (int i = 0; i < maxiem; i++)
{
Response.Write(" <li> <a class='h-linkn' href='" + dt.Rows[i]["url"].ToString() + "' title='" + dt.Rows[i]["title"].ToString().Replace("'", " ") + "'>" + dt.Rows[i]["title"].ToString() + "</a> </li>");
if (lengthoof_decs.Trim() != "0")
{
Response.Write(" <p>" + dt.Rows[i]["desc"].ToString() + "</p> ");
}
}
}
}
catch (Exception ea)
{
}
}