private void ThreadFunction()
        {
            this.Cursor = Cursors.WaitCursor;
            mainAppExe = updaterXmlFiles.GetNodeValue("//EntryPoint");
            Process[] allProcess = Process.GetProcesses();
            foreach (Process p in allProcess)
            {
                if (p.ProcessName.ToLower() + ".exe" == mainAppExe.ToLower())
                {
                    for (int i = 0; i < p.Threads.Count; i++)
                        p.Threads[i].Dispose();
                    p.Kill();
                    isRun = true;
                }
            }
            WebClient wcClient = new WebClient();
            for (int i = 0; i < this.lvUpdateList.Items.Count; i++)
            {
                string UpdateFile = lvUpdateList.Items[i].Text.Trim();
                string updateFileUrl = updateUrl + lvUpdateList.Items[i].Text.Trim();
                long fileLength = 0;

                WebRequest webReq = WebRequest.Create(updateFileUrl);
                WebResponse webRes = webReq.GetResponse();
                fileLength = webRes.ContentLength;

                lbState.Text = "正在下载更新文件,请稍后...";
                pbDownFile.Value = 0;
                pbDownFile.Maximum = (int)fileLength;

                try
                {
                    Stream srm = webRes.GetResponseStream();
                    StreamReader srmReader = new StreamReader(srm);
                    byte[] bufferbyte = new byte[fileLength];
                    int allByte = (int)bufferbyte.Length;
                    int startByte = 0;
                    while (fileLength > 0)
                    {
                        Application.DoEvents();
                        int downByte = srm.Read(bufferbyte, startByte, allByte);
                        if (downByte == 0) { break; };
                        startByte += downByte;
                        allByte -= downByte;
                        pbDownFile.Value += downByte;

                        float part = (float)startByte / 1024;
                        float total = (float)bufferbyte.Length / 1024;
                        int percent = Convert.ToInt32((part / total) * 100);

                        this.lvUpdateList.Items[i].SubItems[2].Text = percent.ToString() + "%";

                    }

                    string tempPath = tempUpdatePath + UpdateFile;
                    CreateDirtory(tempPath);
                    FileStream fs = new FileStream(tempPath, FileMode.OpenOrCreate, FileAccess.Write);
                    fs.Write(bufferbyte, 0, bufferbyte.Length);
                    srm.Close();
                    srmReader.Close();
                    fs.Close();
                }
                catch (WebException ex)
                {
                    MessageBox.Show("更新文件下载失败！" + ex.Message.ToString(), "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            InvalidateControl();
            this.Cursor = Cursors.Default;
        }