检查外链的方法

private void Check()

        {

            int currentNum = CurrentNum;

            if (currentNum >= totalCount)

            {

                return;

            }

            DataGridViewRow row = this.dataGridView1.Rows[currentNum];

            row.Cells["ID"].Style.BackColor = Color.Green;

            string url = row.Cells["URL"].Value.ToString();

            string title = row.Cells["Title"].Value.ToString();

            title = System.Web.HttpUtility.HtmlEncode(title);

            WebClient client = new WebClient();

            client.Encoding = Encoding.UTF8;

            Uri uri = new Uri(url);

            System.IO.Stream stream = null; ;

            try

            {

                stream = client.OpenRead(uri);

            }

            catch (System.Net.WebException ex)

            {

                if (ex.Status == WebExceptionStatus.ProtocolError)

                    row.DefaultCellStyle.BackColor = Color.Yellow;

                if (ex.Status == WebExceptionStatus.ConnectFailure)

                    row.DefaultCellStyle.BackColor = Color.Yellow;

                if (ex.Status == WebExceptionStatus.Timeout)

                    row.DefaultCellStyle.BackColor = Color.Yellow;

                if (stream != null)

                    stream.Dispose();

                client.Dispose();

                return;

            }



            using (System.IO.MemoryStream ms = new System.IO.MemoryStream())

            {

                int len = 0;

                byte[] buff = new byte[512];

                while ((len = stream.Read(buff, 0, 512)) > 0)

                {

                    ms.Write(buff, 0, len);

                }

                string content = System.Text.Encoding.UTF8.GetString(ms.ToArray());

                Match charSetMatch = Regex.Match(content, "<meta([^<]*)charset=\"?'?([^<]*)\"", RegexOptions.IgnoreCase | RegexOptions.Multiline);

                string encoding = charSetMatch.Groups[2].Value;

                if (string.IsNullOrEmpty(encoding))

                {

                    encoding = client.ResponseHeaders[HttpResponseHeader.ContentEncoding];

                }

                if (!string.IsNullOrEmpty(encoding) && encoding.ToLower() != "utf-8")

                {

                    if (encoding.ToLower().Contains("gzip"))

                    {

                        using (System.IO.MemoryStream memory = new System.IO.MemoryStream())

                        {

                            ms.Position = 0L;

                            using (GZipStream gZipStream = new GZipStream(ms, CompressionMode.Decompress))

                            {

                                while ((len = gZipStream.Read(buff, 0, 512)) > 0)

                                {

                                    memory.Write(buff, 0, len);

                                }

                            }

                            content = System.Text.Encoding.UTF8.GetString(memory.ToArray());

                        }



                    }

                    else

                    {

                        try

                        {

                            if (encoding.ToLower().Contains("gbk"))

                                encoding = "gb2312";

                            content = System.Text.Encoding.GetEncoding(encoding).GetString(ms.ToArray());

                        }

                        catch

                        {

                        }

                    }

                }

                Match match = titleRegex.Match(content);

                if (!match.Success)

                {

                    row.DefaultCellStyle.BackColor = Color.FromArgb(255, 200, 200, 200);

                }

                else if (content.IndexOf(title) < 0)

                {

                    row.DefaultCellStyle.BackColor = Color.FromArgb(255, 200, 200, 200);

                }

            }

            if (stream != null)

                stream.Dispose();

            row.Cells["ID"].Style.BackColor = Color.FromArgb(255, 108, 226, 108);

        }

最近工作需要，需要检查推广人员的工作情况，每天500条以上的外链，人工一条一条的检查实在不和谐。写了一个检查的程序，备份下。