private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";  
        /// <summary>  
        /// 创建GET方式的HTTP请求  
        /// </summary>  
        /// <param name="url">请求的URL</param>  
        /// <param name="timeout">请求的超时时间</param>  
        /// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>  
        /// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>  
        /// <returns></returns>  
        public static HttpWebResponse CreateGetHttpResponse(string url,int? timeout, string userAgent,CookieCollection cookies)  
        {  
            if (string.IsNullOrEmpty(url))  
            {  
                throw new ArgumentNullException("url");  
            }  
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;  
            request.Method = "GET";  
            request.UserAgent = DefaultUserAgent;  
            if (!string.IsNullOrEmpty(userAgent))  
            {  
                request.UserAgent = userAgent;  
            }  
            if (timeout.HasValue)  
            {  
                request.Timeout = timeout.Value;  
            }  
            if (cookies != null)  
            {  
                request.CookieContainer = new CookieContainer();  
                request.CookieContainer.Add(cookies);  
            }  
            return request.GetResponse() as HttpWebResponse;  
        }

------解决方案--------------------

http://blog.csdn.net/luols/article/details/5700371
C# code

XmlDocument xmlDoc = new XmlDocument();  
    xmlDoc.Load("url");

------解决方案--------------------

或者给你搜得更具体一些吧：

http://msdn.microsoft.com/zh-cn/library/fhd1f0sw(v=vs.80).aspx

只写一条简单的语句就行了，用不着一大堆。