C# (CSharp) HtmlNodeCollection.Cast示例

示例#1

 // This function gets  a url path and an xquery and returns an array of the values in the xquery taken from the path
 static HtmlNode[] GetTable(string path, string xquery)
 {
     using (WebClient client = new WebClient())
     {
         client.Headers["User-Agent"] =
             "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36";
         client.UseDefaultCredentials = true;
         HtmlDocument htmlDoc = new HtmlDocument();
         try
         {
             htmlDoc.LoadHtml(client.DownloadString(path));
             htmlDoc.Save(root + "websiteDump.txt");
             HtmlNodeCollection currentData = htmlDoc.DocumentNode.SelectNodes(xquery);
             return(currentData.Cast <HtmlNode>().ToArray());
         }
         catch
         {
             Console.WriteLine("Didn't get to the server");
             return(null);
         }
     }
 }