[ { "Id": "544312", "ThreadId": "240569", "Html": "\r\n

 I have the following when creating and merging zip files

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What the problem is : Don't know how to preserve the orginal created, modified and accessed time.

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Please advise.

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Thanks

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jhw 

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 ZipFile\r\n zipnew = ZipFile.Read(strPath);\r\n

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ZipFile zipold =\r\nnew\r\nZipFile(path);\r\n

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{using (System.IO.MemoryStream\r\n mem = new System.IO.MemoryStream(Convert.ToInt32(zenew.UncompressedSize)))

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zenew.Extract(mem);

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stringfn = zenew.FileName.ToString();

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zipold.UpdateEntry(fn, mem.ToArray());

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 } 

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zipold.Save();

\r\n", "PostedDate": "2011-01-05T06:41:46.99-08:00", "UserRole": null, "MarkedAsAnswerDate": null }, { "Id": "544982", "ThreadId": "240569", "Html": "\r\n

Hi jfw,

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First thing:  employ using clauses around your use of ZipFile.  It will avoid problems down the road.  For examples, check ANY of the documentation or code examples published on codeplex.com.

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Now, on to your question:

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The modified, created, and accessed times are available as properties on the\r\n\r\nZipEntry object. I think that is zenew in your code, but your code isn't complete so I'm not sure.  In that case, you can reference zenew.AccessedTime, zenew.Modifiedtime, and zenew.CreatedTime.  You can also set these properties on the entry\r\n in the "old" (being updated) zipfile. 

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Something like this:

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\r\n
...\r\nzenew.Extract(mem);\r\nvar e = zipold.UpdateEntry(zenew.FileName, mem.ToArray());\r\ne.AccessedTime = zenew.AccessedTime;\r\ne.ModifiedTime = zenew.ModifiedTime;\r\ne.CreatedTime = zenew.CreatedTime;\r\n...\r\n
\r\n
\r\n

There are probably ways to do what you are doing that are more memory efficient, or faster, using streams. But what you are doing should work.

\r\n", "PostedDate": "2011-01-06T11:03:26.877-08:00", "UserRole": null, "MarkedAsAnswerDate": null }, { "Id": "545106", "ThreadId": "240569", "Html": "\r\n
\r\n

Thanks for your reply.

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How would I properly code the using in this scenario?

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ZipFile zipnew =\r\nZipFile.Read(strPath);

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ZipFile zipold =\r\nnew ZipFile(path);

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foreach (ZipEntry zenew\r\nin zipnew)

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{\r\nusing (System.IO.MemoryStream mem =\r\nnew System.IO.MemoryStream(Convert.ToInt32(zenew.UncompressedSize)))

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{\r\n

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string fn = zenew.FileName.ToString();

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// at this point fn is the full path and filename

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DateTime mt = zenew.ModifiedTime;

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DateTime ct = zenew.CreationTime;

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DateTime at = zenew.AccessedTime;

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DateTime lm = zenew.LastModified;

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zenew.Extract(mem);

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var zn = zipold.UpdateEntry(fn, mem.ToArray());

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zn.AccessedTime = at;

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zn.ModifiedTime = mt;

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zn.CreationTime = ct;

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}

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}

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zipold.Save();

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zipnew.Dispose();

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The zipold filename is truncated to just the filename and not the full path.

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Thanks for your help.

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Joe

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\r\n

From: Cheeso [email removed]\r\n
\r\nSent: Thursday, January 06, 2011 1:04 PM
\r\nTo: joe@eis-network.com
\r\nSubject: Re: preserve original datetime for creation date, modified date, accessed date [DotNetZip:240569]

\r\n
\r\n
\r\n

\r\n

From: Cheeso

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\r\n

Hi jfw,

\r\n

First thing: employ using clauses around your use of ZipFile. It will avoid problems down the road. For examples, check ANY of the documentation or code examples published on codeplex.com.

\r\n

Now, on to your question:

\r\n

The modified, created, and accessed times are available as properties on the\r\n\r\nZipEntry object. I think that is zenew in your code, but your code isn't complete so I'm not sure. In that case, you can reference zenew.AccessedTime, zenew.Modifiedtime, and zenew.CreatedTime. You can also set these properties on the entry in the "old"\r\n (being updated) zipfile.

\r\n

Something like this:

\r\n
\r\n
...
\r\n
zenew.Extract(mem);
\r\n
var e = zipold.UpdateEntry(zenew.FileName, mem.ToArray());
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e.AccessedTime = zenew.AccessedTime;
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e.ModifiedTime = zenew.ModifiedTime;
\r\n
e.CreatedTime = zenew.CreatedTime;
\r\n
...
\r\n
\r\n

There are probably ways to do what you are doing that are more memory efficient, or faster, using streams. But what you are doing should work.

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\r\n
\r\n", "PostedDate": "2011-01-06T14:37:57.823-08:00", "UserRole": null, "MarkedAsAnswerDate": null }, { "Id": "545350", "ThreadId": "240569", "Html": "\r\n

e.Filename = fn

\r\n", "PostedDate": "2011-01-07T05:40:34.597-08:00", "UserRole": null, "MarkedAsAnswerDate": null } ]