By using this site, you agree to our updated Privacy Policy and our Terms of Use. Manage your Cookies Settings.
440,230 Members | 2,427 Online
Bytes IT Community
+ Ask a Question
Need help? Post your question and get tips & solutions from a community of 440,230 IT Pros & Developers. It's quick & easy.

Unable to open file

P: n/a
Dear Experts,

In my web application, I'm having a button to view an attachment. After I
retrieve the record from database (Ms. Access), I have a button to view the
attachment (if there is any). The button work fine when I run it at my local
machine. However, when I moved all the programs over to the server, I am
unable to view the attachment, although I have the file physically at the
server. The error message that I got is:

------------------------------------------------------------------------
Server Error in '/ITRS_Testing' Application.
--------------------------------------------------------------------------------

Operation is not allowed when the object is closed.
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information about
the error and where it originated in the code.

Exception Details: System.Runtime.InteropServices.COMException: Operation is
not allowed when the object is closed.

Source Error:

Line 26:
Line 27: ' This should be the full path and filename to save the
file on the client....
Line 28: objStream.SaveToFile(strFilename, 2) ' adSaveCreateOverWrite
Line 29: objStream.Close()
Line 30: objStream = Nothing

Source File: D:\ITRS_Testing\ITRS\EnquiryResult.aspx Line: 28

Stack Trace:

[COMException (0x800a0e78): Operation is not allowed when the object is
closed.]

Microsoft.VisualBasic.CompilerServices.LateBinding .InternalLateCall(Object o,
Type objType, String name, Object[] args, String[] paramnames, Boolean[]
CopyBack, Boolean IgnoreReturn) +776
Microsoft.VisualBasic.CompilerServices.NewLateBind ing.LateCall(Object
Instance, Type Type, String MemberName, Object[] Arguments, String[]
ArgumentNames, Type[] TypeArguments, Boolean[] CopyBack, Boolean
IgnoreReturn) +365640
ASP.itrs_enquiryresult_aspx.ViewDoc(Object Source, EventArgs E) in
D:\ITRS_Testing\ITRS\EnquiryResult.aspx:28
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
System.Web.UI.WebControls.Button.RaisePostBackEven t(String eventArgument)
+107

System.Web.UI.WebControls.Button.System.Web.UI.IPo stBackEventHandler.RaisePostBackEvent(String eventArgument) +7
System.Web.UI.Page.RaisePostBackEvent(IPostBackEve ntHandler
sourceControl, String eventArgument) +11
System.Web.UI.Page.RaisePostBackEvent(NameValueCol lection postData) +33
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102

--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET
Version:2.0.50727.42
----------------------------------------------------------------------------------

The code in my program is as follow:

Public Sub ViewDoc(ByVal Source As Object, ByVal E As EventArgs)
Dim strFilename As String
'================================================= ==============
' Example using ADODB Stream Object to load resource from server
' and deposit in specified directory on client, using client-side
' script
' Peter Bromberg
'================================================= ===============
' Don't need the TypeLib METADATA at the top if you specify the
constants by numeric value instead of by name

' Set up an ADO Stream ....
Dim objStream
objStream = CreateObject("ADODB.Stream")
objStream.Type = 1 ' adTypeBinary
' The following should be the absolute URL to the file on the
server.....
objStream.Open("URL=http://Teklang1/ITRS_Testing/ITRS/Attachments/"
& Trim(txtAttachment.Text))
'objStream.Open("//Teklang1/ITRS_Testing/ITRS/Attachments/" &
Trim(txtAttachment.Text))

Dim objFSO
objFSO = Server.CreateObject("Scripting.FileSystemObject")
strFilename = objFSO.getSpecialFolder(2).path & "\" &
Trim(txtAttachment.Text)

' This should be the full path and filename to save the file on the
client....
objStream.SaveToFile(strFilename, 2) ' adSaveCreateOverWrite
objStream.Close()
objStream = Nothing
' Now we'll "run" the file....
Dim AttachFile As System.IO.FileInfo = New
System.IO.FileInfo(strFilename)
Response.Clear()
Response.AddHeader("Content-Disposition", "attachment; filename=" &
AttachFile.Name)
Response.AddHeader("Content-Length", AttachFile.Length.ToString())
Response.ContentType = "application/octet-stream"
Response.WriteFile(AttachFile.FullName)
Response.End()
End Sub
----------------------------------------------------------------------

Please advise where is the mistake that I have made. Many thanks in advance.

Feb 20 '06 #1
Share this Question
Share on Google+
6 Replies


P: n/a
Seok,

Mostly are this kind of problems that the ASPNET user has not the proper
rights.

Be very careful with giving the ASPNET or other general user rights, if you
do that wrong you are able to open your complete server for the outer world.

I hope this helps,

Cor
Feb 20 '06 #2

P: n/a
Cor,

Can I create the ASPNET user in the webserver which is also the domain
controller of my company. It is running on Window 2000 sp4. Which means can I
create the user in the Active Directory?

"Cor Ligthert [MVP]" wrote:
Seok,

Mostly are this kind of problems that the ASPNET user has not the proper
rights.

Be very careful with giving the ASPNET or other general user rights, if you
do that wrong you are able to open your complete server for the outer world.

I hope this helps,

Cor

Feb 21 '06 #3

P: n/a
Seok,

It should be already there ASPNET is his name.

Cor

"Seok Bee" <se*****@yahoo.com> schreef in bericht
news:2E**********************************@microsof t.com...
Cor,

Can I create the ASPNET user in the webserver which is also the domain
controller of my company. It is running on Window 2000 sp4. Which means
can I
create the user in the Active Directory?

"Cor Ligthert [MVP]" wrote:
Seok,

Mostly are this kind of problems that the ASPNET user has not the proper
rights.

Be very careful with giving the ASPNET or other general user rights, if
you
do that wrong you are able to open your complete server for the outer
world.

I hope this helps,

Cor

Feb 21 '06 #4

P: n/a
I've checked from the Active Directory and the user ASPNET is not there?
Does that mean I need to install certain thing?

"Cor Ligthert [MVP]" wrote:
Seok,

It should be already there ASPNET is his name.

Cor

"Seok Bee" <se*****@yahoo.com> schreef in bericht
news:2E**********************************@microsof t.com...
Cor,

Can I create the ASPNET user in the webserver which is also the domain
controller of my company. It is running on Window 2000 sp4. Which means
can I
create the user in the Active Directory?

"Cor Ligthert [MVP]" wrote:
Seok,

Mostly are this kind of problems that the ASPNET user has not the proper
rights.

Be very careful with giving the ASPNET or other general user rights, if
you
do that wrong you are able to open your complete server for the outer
world.

I hope this helps,

Cor


Feb 21 '06 #5

P: n/a
Seok,

Are you sure that IIS and the proper Net framework version are installed?

Cor

"Seok Bee" <se*****@yahoo.com> schreef in bericht
news:62**********************************@microsof t.com...
I've checked from the Active Directory and the user ASPNET is not there?
Does that mean I need to install certain thing?

"Cor Ligthert [MVP]" wrote:
Seok,

It should be already there ASPNET is his name.

Cor

"Seok Bee" <se*****@yahoo.com> schreef in bericht
news:2E**********************************@microsof t.com...
> Cor,
>
> Can I create the ASPNET user in the webserver which is also the domain
> controller of my company. It is running on Window 2000 sp4. Which means
> can I
> create the user in the Active Directory?
>
>
>
> "Cor Ligthert [MVP]" wrote:
>
>> Seok,
>>
>> Mostly are this kind of problems that the ASPNET user has not the
>> proper
>> rights.
>>
>> Be very careful with giving the ASPNET or other general user rights,
>> if
>> you
>> do that wrong you are able to open your complete server for the outer
>> world.
>>
>> I hope this helps,
>>
>> Cor
>>
>>
>>


Feb 21 '06 #6

P: n/a
Yea, this is our webserver.
..NET Framework 2.0 is being installed. Now I'm installing .NET Framework 1.1
and the service pack

"Cor Ligthert [MVP]" wrote:
Seok,

Are you sure that IIS and the proper Net framework version are installed?

Cor

"Seok Bee" <se*****@yahoo.com> schreef in bericht
news:62**********************************@microsof t.com...
I've checked from the Active Directory and the user ASPNET is not there?
Does that mean I need to install certain thing?

"Cor Ligthert [MVP]" wrote:
Seok,

It should be already there ASPNET is his name.

Cor

"Seok Bee" <se*****@yahoo.com> schreef in bericht
news:2E**********************************@microsof t.com...
> Cor,
>
> Can I create the ASPNET user in the webserver which is also the domain
> controller of my company. It is running on Window 2000 sp4. Which means
> can I
> create the user in the Active Directory?
>
>
>
> "Cor Ligthert [MVP]" wrote:
>
>> Seok,
>>
>> Mostly are this kind of problems that the ASPNET user has not the
>> proper
>> rights.
>>
>> Be very careful with giving the ASPNET or other general user rights,
>> if
>> you
>> do that wrong you are able to open your complete server for the outer
>> world.
>>
>> I hope this helps,
>>
>> Cor
>>
>>
>>


Feb 21 '06 #7

This discussion thread is closed

Replies have been disabled for this discussion.

Browse more Visual Basic .NET Questions on Bytes