C#得到网页源码问题

[weblogical]

public string getCode(string url)
        {
            if (!Regex.IsMatch(url, @"(http(s)?://)?([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?", RegexOptions.IgnoreCase))
            {
                throw new Exception("The url is invalid!");
            }
            try
            {
                //WebRequest mywebReq = WebRequest.Create(url);
                //WebResponse mywebRep = mywebReq.GetResponse();
                //Stream mystream = mywebRep.GetResponseStream();
                //StreamReader sr = new StreamReader(mystream, e);
                WebClient myWebClient = new WebClient();
                myWebClient.Credentials = CredentialCache.DefaultCredentials;
                byte[] myDataBuffer = myWebClient.DownloadData(url);

                string getValue = Encoding.Default.GetString(myDataBuffer);
                Match charSetMatch = Regex.Match(getValue, "<meta([^<]*)charset=([^<]*)\"", RegexOptions.IgnoreCase | RegexOptions.Multiline);
                string webCharSet = charSetMatch.Groups[2].Value;
                if (webCharSet == null || webCharSet == "")
                {
                    webCharSet = "utf-8";
                }
                getValue = Encoding.GetEncoding(webCharSet).GetString(myDataBuffer);
                return getValue;
            }
            catch
            {
                throw new Exception("Request timed out!");
            }
        }

我打印了出来，发现源码比较少，比如百度 可以完全打印出来；换一个比较长的 就不行了，请问怎么回事？

[weblogical]

这段代码 要得到网页的 编码格式。为了防止乱码

[xskj0525]

可能问题是出在那个正则上
估计是没有完全匹配 你那个源码较长的代码里所有url吧 有些还是没有匹配到
建议用正则工具看一下

其中有部分是自动转换编码的吧 呵呵 收录下!

[weblogical]

我打印的是网页源代码

[jefflovejava]

Match charSetMatch = Regex.Match(getValue, "<meta([^<]*)charset=([^<]*)\"", RegexOptions.IgnoreCase | RegexOptions.Multiline);
string webCharSet = charSetMatch.Groups[2].Value;
if (webCharSet == null || webCharSet == "")
{
webCharSet = "utf-8";
}
getValue = Encoding.GetEncoding(webCharSet).GetString(myDataBuffer);

不用这一段也不行么？