File zipping larger than 600 MB RSS

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  arunveerappa...

  Member

  71 Points

  177 Posts

  File zipping larger than 600 MB

  Mar 18, 2011 03:18 AM|arunveerappan|LINK

     

  Hi Members,

  I've a scenario, where my current version of code need to zip file larger than 600 MB and it fails. It uses the ICSharpCode.SharpZipLib.dll [v0.81.0.1407]

  Below is the code snippet, I use. I got suggestions that using StreamUtils.Copy() method in ICSharpCode.SharpZipLib.Core namespace will make the file zipping in packets.

  The ICSharpCode.SharpZipLib.Core is available in new version of ICSharpCode.SharpZipLib.dll [v.0.86.0.518] but still my zipping fails. Can you please suggest in this.

  Note: I've to use ICSharpCode.SharpZipLib.dll as my project is build on Frame 1.1.

  Please suggest.

  Note: I use the zipped file to send via mail (compress before delivery).

  protected void CompressBeforeDelivery()

   

  {

  try

  {

   

  Crc32 _crc = new

   if (File.Exists(this.__reportsWorkingFolder+@"\"+this

  .__resultFileName+".zip"))

  File.Delete(this.__reportsWorkingFolder+@"\"+this.__resultFileName+".zip");

  ZipOutputStream _zp = new ZipOutputStream(System.IO.File.Create(this.__reportsWorkingFolder+@"\"+this.__resultFileName+".zip"));

  _zp.SetLevel(6);

  FileStream _fs = File.OpenRead(this

  .__deliverThisFile);

  byte[] _buffer = new byte[_fs.Length];

  _fs.Read(_buffer, 0, _buffer.Length);

  ZipEntry _entry = new ZipEntry(new FileInfo(this

  .__deliverThisFile).Name);byte[] buffer = new byte[2048]; //My changes *****************

  StreamUtils.Copy(_fs, _zp, buffer); //My changes *******************

  _entry.DateTime = DateTime.Now;

  _entry.Size = _fs.Length;

  _fs.Close();

  _crc.Reset();

  _crc.Update(_buffer);

  _entry.Crc = _crc.Value;

  _zp.PutNextEntry(_entry);

  _zp.Write(_buffer, 0, _buffer.Length);

  _zp.Finish();

  _zp.Close();

  //delete the current results file and make the zip file as the results file that will be delivered.

  DeleteLocalCopyOfDeliveredFile();

  this.__deliverThisFile = this.__reportsWorkingFolder+@"\"+this

  .__resultFileName+".zip";

  }

  catch

  (Exception ex)

  {

  throw

  (ex);

   

  }

  V.A.K
• • Reply
  jerryjoseph

  Contributor

  4812 Points

  1289 Posts

  Re: File zipping larger than 600 MB

  Mar 18, 2011 09:46 AM|jerryjoseph|LINK

  arunveerappan

  Note: I use the zipped file to send via mail (compress before delivery).

  Are you trying to zip and send a 600 MB file?

  Will the mail server accept such a huge attachment?

  Jerry Joseph - MCSD, MCPD, MCTS
  linkedin | twitter | www.jerryjoseph.net
• • Reply
  arunveerappa...

  Member

  71 Points

  177 Posts

  Re: File zipping larger than 600 MB

  Mar 18, 2011 10:10 AM|arunveerappan|LINK

  I'm trying to zip a file larger than 600 MB, so it'd be in reduced size. And then trying to send the zip file vai mail.

  V.A.K
• • Reply
  jerryjoseph

  Contributor

  4812 Points

  1289 Posts

  Re: File zipping larger than 600 MB

  Mar 18, 2011 10:33 AM|jerryjoseph|LINK

  arunveerappan

  I'm trying to zip a file larger than 600 MB, so it'd be in reduced size. And then trying to send the zip file vai mail.

  What ratio of compression are you expecting? Usually the mail servers limit attachment size to 10 - 20 MB.

  Jerry Joseph - MCSD, MCPD, MCTS
  linkedin | twitter | www.jerryjoseph.net
• • Reply
  arunveerappa...

  Member

  71 Points

  177 Posts

  Re: File zipping larger than 600 MB

  Mar 19, 2011 06:52 AM|arunveerappan|LINK

  Jerry,

  I'm not concerned about the mail attachment.

  I need the current code to compress files larger than 600 MB. Once zipped I can FTP the file to my clients rather mailing them.

  Kindly suggest.

  V.A.K