根据网址(url)获取XML

方法一：网上搜索并精简了一下

public XmlDocument GetXMLFromUrl(string strUrl)
        {
            // 该方法必须设定Encoding编码格式
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strUrl);
            request.Method = "POST";
            HttpWebResponse response;
            Stream responseStream;
            StreamReader reader;
            XmlDocument outxml = new XmlDocument();
            response = request.GetResponse() as HttpWebResponse;
            responseStream = response.GetResponseStream();
            reader = new System.IO.StreamReader(responseStream, Encoding.GetEncoding("GBK"));
            string srcString = reader.ReadToEnd();
            reader.Close();
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(srcString);
            return doc;
        }

方法二：网上搜到

public XmlDocument GetXMLFromUrl(string strUrl)
        {
            //方法二
            Uri uri = new Uri(strUrl);
            System.Net.WebClient wb = new System.Net.WebClient();
            wb.Proxy.Credentials = System.Net.CredentialCache.DefaultCredentials;
            MemoryStream ms = new MemoryStream(wb.DownloadData(strUrl));
            System.Xml.XmlTextReader rdr = new System.Xml.XmlTextReader(ms);
            XmlDocument doc = new XmlDocument();
            doc.Load(rdr);
            return doc;
        }

方法三：研究后发现，网上搜到的都太复杂了，自己写了个超简单的

 public XmlDocument GetXMLFromUrl(string strUrl)
        {
            //方法一
            XmlDocument doc = new XmlDocument();
            doc.Load(strUrl);
            return doc;
        }