win/C#/frmDownload.cs

   1 /*  frmDownload.cs $\r
   2         \r
   3            This file is part of the HandBrake source code.\r
   4            Homepage: <http://handbrake.fr>.\r
   5            It may be used under the terms of the GNU General Public License. */\r
   6 \r
   7 using System;\r
   8 using System.Collections.Generic;\r
   9 using System.Windows.Forms;\r
  10 using System.Net;\r
  11 using System.IO;\r
  12 using System.Threading;\r
  13 using System.Diagnostics;\r
  14 \r
  15 namespace Handbrake\r
  16 {\r
  17     public partial class frmDownload : Form\r
  18     {\r
  19         private Thread downloadThread;\r
  20         private Stream responceStream;\r
  21         private Stream loacalStream;\r
  22         private HttpWebRequest webRequest;\r
  23         private HttpWebResponse webResponse;\r
  24         private static int progress;\r
  25         private delegate void UpdateProgessCallback(Int64 BytesRead, Int64 TotalBytes);\r
  26         private delegate void DownloadCompleteCallback();\r
  27         private delegate void DownloadFailedCallback();\r
  28 \r
  29         private string file;\r
  30 \r
  31         public frmDownload(string filename)\r
  32         {\r
  33             InitializeComponent();\r
  34 \r
  35             file = filename;\r
  36             downloadThread = new Thread(Download);\r
  37             downloadThread.Start();\r
  38         }\r
  39 \r
  40         private void Download()\r
  41         {\r
  42             string tempPath = Path.Combine(Path.GetTempPath(), "handbrake-setup.exe");\r
  43             string hbUpdate = file;\r
  44             WebClient wcDownload = new WebClient();\r
  45 \r
  46             try\r
  47             {\r
  48                 if (File.Exists(tempPath))\r
  49                     File.Delete(tempPath);\r
  50 \r
  51                 webRequest = (HttpWebRequest)WebRequest.Create(hbUpdate);\r
  52                 webRequest.Credentials = CredentialCache.DefaultCredentials;\r
  53                 webResponse = (HttpWebResponse)webRequest.GetResponse();\r
  54                 Int64 fileSize = webResponse.ContentLength;\r
  55 \r
  56                 responceStream = wcDownload.OpenRead(hbUpdate);\r
  57                 loacalStream = new FileStream(tempPath, FileMode.Create, FileAccess.Write, FileShare.None);\r
  58 \r
  59                 int bytesSize = 0;\r
  60                 byte[] downBuffer = new byte[2048];\r
  61 \r
  62                 long flength = 0;\r
  63                 while ((bytesSize = responceStream.Read(downBuffer, 0, downBuffer.Length)) > 0)\r
  64                 {\r
  65                     loacalStream.Write(downBuffer, 0, bytesSize);\r
  66                     flength = loacalStream.Length;\r
  67                     this.Invoke(new UpdateProgessCallback(this.UpdateProgress), new object[] { loacalStream.Length, fileSize });\r
  68                 }\r
  69 \r
  70                 responceStream.Close();\r
  71                 loacalStream.Close();\r
  72 \r
  73                 if (flength != fileSize)\r
  74                     this.Invoke(new DownloadFailedCallback(this.downloadFailed));\r
  75                 else\r
  76                     this.Invoke(new DownloadCompleteCallback(this.downloadComplete));\r
  77             }\r
  78             catch (Exception)\r
  79             {\r
  80                 // Do Nothing \r
  81             }\r
  82         }\r
  83 \r
  84         private void UpdateProgress(Int64 BytesRead, Int64 TotalBytes)\r
  85         {\r
  86             try\r
  87             {\r
  88                 long p = (BytesRead * 100) / TotalBytes;\r
  89                 progress = int.Parse(p.ToString());\r
  90                 progress_download.Value = progress;\r
  91                 lblProgress.Text = (BytesRead / 1024) + "k of " + (TotalBytes / 1024) + "k ";\r
  92             }\r
  93             catch (Exception exc)\r
  94             {\r
  95                 MessageBox.Show("Integer Convertion Error On Download \n" + exc.ToString(), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);\r
  96             }\r
  97         }\r
  98 \r
  99         private void downloadComplete()\r
 100         {\r
 101             lblProgress.Text = "\83_\83E\83\93\83\8d\81[\83h\8a®\97¹";\r
 102             btn_cancel.Text = "\95Â\82¶\82é";\r
 103 \r
 104             string tempPath = Path.Combine(Path.GetTempPath(), "handbrake-setup.exe");\r
 105 \r
 106             Process startInstall = Process.Start(tempPath);\r
 107             this.Close();\r
 108             Application.Exit();\r
 109         }\r
 110 \r
 111         private void downloadFailed()\r
 112         {\r
 113             lblProgress.Text = "\83_\83E\83\93\83\8d\81[\83h\8e¸\94s";\r
 114             btn_cancel.Text = "\95Â\82¶\82é";\r
 115         }\r
 116 \r
 117         private void btn_cancel_Click(object sender, EventArgs e)\r
 118         {\r
 119             try\r
 120             {\r
 121                 webResponse.Close();\r
 122                 responceStream.Close();\r
 123                 loacalStream.Close();\r
 124                 downloadThread.Abort();\r
 125                 progress_download.Value = 0;\r
 126                 lblProgress.Text = "\83_\83E\83\93\83\8d\81[\83h\92â\8e~";\r
 127                 this.Close();\r
 128             }\r
 129             catch (Exception)\r
 130             {\r
 131                 // Do nothing\r
 132             }\r
 133         }\r
 134     }\r
 135 }