Permission's Problem

  • Thread starter Thread starter Andy
  • Start date Start date
A

Andy

Hi

I have created a facility to allow the user to upload an
image file to the webserver. When the user creates the
image for the first time i.e. the image does not exist
within the directory everything works fine. The problem
occurs if my ASP.NET dll tries to delete the file or
overwrite it???

I assume my app will be using the ASPNET account and I
have ensured that this account has full control over the
directories in question etc.

Anyone any thoughts?

Thanks in advance

Andy
 
What is the error?

--
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.
 
Whoops!

I have since restarted IIS as well but to no avail??

this is the error generated:-

Source:
CodeClinic.RestWebPort.BusLogic.Image.Save

Exception:
Access to the
path "E:\Inetpub\Poachers\library\dishes\dish_8.jpg" is
denied.

Trace:
at System.IO.__Error.WinIOError(Int32 errorCode,
String str)
at System.IO.FileStream..ctor(String path, FileMode
mode, FileAccess access, FileShare share, Int32
bufferSize, Boolean useAsync, String msgPath, Boolean
bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode
mode)
at System.Web.HttpPostedFile.SaveAs(String filename)
at CodeClinic.RestWebPort.BusLogic.Image.Save(String
file, HtmlInputFile uploadedfile)
 
There are only 2 possible reasons why your app might be denied access to the
file:

1. It doesn't have the necessary permission
2. The file is in use by an application and locked.

You can easily determine whetyher it's number 2 or not. If you can delete
the file and the app cannot, the problem is number 1. When a file is locked,
even the Administrator group can't delete it.

If the problem is number 1, re-check your permissions. And remember that
Deny permission always overrides Grant. In other words, if you have granted
the user permission, and somewhere else that permission is explicitly
denied, the permission is not granted.

You may also want to make sure that the account you think ASP.Net is running
under is indeed the account it is running under. To do this, just open up
Task Manger, check the Processes tab. The user account under which your
ASP.Net worker process is running will be displayed.

--
Kevin Spencer
..Net Developer
Microsoft MVP
Big things are made up
of lots of little things.
 
SORTED!

It seems that under Windows 2003 the process is NOT
running under the ASPNET account but a NETWORK SERVICES
account???

However if this is the case how is it writing the first
file upload successfully to the directory???

weird!

It is now working though, which is nice ;-)
 
Hi Andy,

Thank you for posting to the MSDN newsgroups.

I am glad to know that the problem is resolved. You are right that the
default account is the Network_Service account in Windows 2003 Server (IIS
6). If you want to change the account, please refer to the following
article.

INFO: Implementing Impersonation in an ASP.NET Application
http://support.microsoft.com/default.aspx?scid=kb;en-us;306158

If you have any more concerns, please feel free to let me know.

Best regards,

Jacob Yang
Microsoft Online Partner Support
Get Secure! ¨C www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.
 
Thanks guys :-)
-----Original Message-----
Hi Andy,

Thank you for posting to the MSDN newsgroups.

I am glad to know that the problem is resolved. You are right that the
default account is the Network_Service account in Windows 2003 Server (IIS
6). If you want to change the account, please refer to the following
article.

INFO: Implementing Impersonation in an ASP.NET Application
us;306158

If you have any more concerns, please feel free to let me know.

Best regards,

Jacob Yang
Microsoft Online Partner Support
Get Secure! ¨C www.microsoft.com/security
This posting is provided "as is" with no warranties and confers no rights.

.
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