Error: Stream does not support writing

Last post 05-23-2007 4:53 PM by C1_BernardoC. 4 replies.

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05-22-2007 2:12 PM

emilyluo
Joined on 05-22-2007
Posts 3

Error: Stream does not support writing

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Some of the users got this error while my application is using c1zip to create a zip file for backup purpose. Here is the stack trace info. Can someone please help? Thanks a lot!

-Emily

StackTrace Information

*********************************************

at System.IO.__Error.WriteNotSupported()

at System.IO.FileStream.SetLength(Int64 value)

at C1.C1Zip.e.b()

at C1.C1Zip.e.d()

at C1.C1Zip.C1ZipFile.r(Stream A_0, String A_1)

at C1.C1Zip.C1ZipFile.a(String A_0, String A_1)

at C1.C1Zip.C1ZipEntryCollection.Add(String fileName, String entryName)

at C1.C1Zip.C1ZipEntryCollection.Add(String fileName)

05-23-2007 9:48 AM In reply to

C1_BernardoC
Joined on 03-03-2006
Posts 2,418

Re: Error: Stream does not support writing

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It looks like your application opened a stream that is not writeable.
Naturally, you can't create a zip file using such a stream...

Can you post a sample or some source code?

05-23-2007 10:39 AM In reply to

emilyluo
Joined on 05-22-2007
Posts 3

Re: Error: Stream does not support writing

Reply Contact

Thanks Bernardo for your quick reply. This application worked fine for a long time until some of the users migrated to Active Directory. This error may be caused by the AD migration. I just want to see if you have any idea what could cause this error. Here is the source code, exception was returned when adding files to the Zip.

' Create zip file:

Dim oZip As New C1ZipFile

oZip.Create(BackupZipFileName)

'Compress database files:

For i As Integer = 0 To arrDataFiles.Count - 1

oZip.Entries.Add(arrDataFiles(i).ToString())

emilyluo
Joined on 05-22-2007
Posts 3

Re: Error: Stream does not support writing

Reply Contact

It turns out that the error is caused by a file scan software that frequently scans the files on local drive, and made the file stream readonly

05-23-2007 4:53 PM In reply to

C1_BernardoC
Joined on 03-03-2006
Posts 2,418

Re: Error: Stream does not support writing

Reply Contact

Glad to know the issue has been clarified. I hope the solution will be
easy...

<emilyluo> wrote in message news:195162@test.componentone.com...
> It turns out that the error is caused by a file scan software that
> frequently scans the files on local drive, and made the file stream
> readonly
>

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