Performing Asynchronous operation

Hi
I have 2 operations to perform one is to upload data and the second is
to generate report. Both take huge time(more than 20 mins and I believe
by that time session would have expired) and hence has to be done
asynchronously.
For uploading data, user will click start button and the asynchronous
operation has to start immediately.
For report generation, user will enter a time when the report has to be
generated(wend date time) and press start button. The asynchronous
operation should start only at this designated time.
How can I do the above 2 operations?
Thanks
rjn
*** Sent via Developersdex http://www.examnotes.net ***
Don't just participate in USENET...get rewarded for it!You need to read up on threading or use an asynchronous web service for your
first problem. Check out http://www.15seconds.com/issue/031124.htm.
For the second item, you don't say what your system is. If SQL Server, pop
the date and time into a field that can be scanned by a SQL Agent Job every
ten minutes or so. When the record is within ten minutes of the current
time, fire off a stored procedure.
If not SQL, you could achieve something similar using a file and Windows
Scheduler.
"RJN" <rjn@.yahoo.com> wrote in message
news:%23TA15ehrEHA.2000@.tk2msftngp13.phx.gbl...
> Hi
> I have 2 operations to perform one is to upload data and the second is
> to generate report. Both take huge time(more than 20 mins and I believe
> by that time session would have expired) and hence has to be done
> asynchronously.
> For uploading data, user will click start button and the asynchronous
> operation has to start immediately.
> For report generation, user will enter a time when the report has to be
> generated(wend date time) and press start button. The asynchronous
> operation should start only at this designated time.
> How can I do the above 2 operations?
> Thanks
> rjn
>
> *** Sent via Developersdex http://www.examnotes.net ***
> Don't just participate in USENET...get rewarded for it!

Performing Asynchronous operation

Hi

I have 2 operations to perform one is to upload data and the second is
to generate report. Both take huge time(more than 20 mins and I believe
by that time session would have expired) and hence has to be done
asynchronously.

For uploading data, user will click start button and the asynchronous
operation has to start immediately.

For report generation, user will enter a time when the report has to be
generated(weekend date time) and press start button. The asynchronous
operation should start only at this designated time.

How can I do the above 2 operations?

Thanks

rjn

*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it!You need to read up on threading or use an asynchronous web service for your
first problem. Check out http://www.15seconds.com/issue/031124.htm.

For the second item, you don't say what your system is. If SQL Server, pop
the date and time into a field that can be scanned by a SQL Agent Job every
ten minutes or so. When the record is within ten minutes of the current
time, fire off a stored procedure.

If not SQL, you could achieve something similar using a file and Windows
Scheduler.

"RJN" <rjn@.yahoo.com> wrote in message
news:%23TA15ehrEHA.2000@.tk2msftngp13.phx.gbl...
> Hi
> I have 2 operations to perform one is to upload data and the second is
> to generate report. Both take huge time(more than 20 mins and I believe
> by that time session would have expired) and hence has to be done
> asynchronously.
> For uploading data, user will click start button and the asynchronous
> operation has to start immediately.
> For report generation, user will enter a time when the report has to be
> generated(weekend date time) and press start button. The asynchronous
> operation should start only at this designated time.
> How can I do the above 2 operations?
> Thanks
> rjn
>
> *** Sent via Developersdex http://www.developersdex.com ***
> Don't just participate in USENET...get rewarded for it!

Permission denied creating directory

Hi,
I have a created a simple file upload asp.net web page which also creates di
rectories on the fly using the following code:
string fullpath = Server.MapPath(".\\..\\..\\" + path);
DirectoryInfo dir = new DirectoryInfo(fullpath);
if(!dir.Exists)
dir.Create();
Now the dir.Create() statement gives me a permission denied. The ASP.NET use
r has been giving full control to the directory and in IIS Admin the directo
ry has write permissions for scripts set. There is no problem in uploading t
he file to an already creat
ed directory which I find extremely weird!
What goes wrong ?
My OS is Windows XP using .NET framework 1.1. All the latest security patche
s are installed.Hi,
Does the "System" account have access?
Cheers,
Phil Winstanley
Microsoft ASP.NET MVP
http://www.myservicescentral.com
Hi Christoffer:
One way to trouble shoot these types of problems is to enable auditing
and find out "who" is getting the access denied message.
See:
http://www.pluralsight.com/keith/bo...leauditing.html
and
http://www.pluralsight.com/keith/bo...fileaccess.html
Also, make sure the permissions apply to subfolders - click "Advanced"
and check the "Apply To" column.
HTH,
Scott
http://www.OdeToCode.com
On Mon, 21 Jun 2004 08:25:40 -0700, Christoffer Srensen
<ChristofferSrensen@.discussions.microsoft.com> wrote:

>Hi,
>I have a created a simple file upload asp.net web page which also creates d
irectories on the fly using the following code:
>string fullpath = Server.MapPath(".\\..\\..\\" + path);
>DirectoryInfo dir = new DirectoryInfo(fullpath);
>if(!dir.Exists)
> dir.Create();
>Now the dir.Create() statement gives me a permission denied. The ASP.NET user has b
een giving full control to the directory and in IIS Admin the directory has write pe
rmissions for scripts set. There is no problem in uploading the file to an already c
rea
ted directory which I find extremely weird!
>What goes wrong ?
>My OS is Windows XP using .NET framework 1.1. All the latest security patches are i
nstalled.
"Scott Allen" wrote:

> One way to trouble shoot these types of problems is to enable auditing
> and find out "who" is getting the access denied message.
> See:
> http://www.pluralsight.com/keith/bo...leauditing.html
> and
> http://www.pluralsight.com/keith/bo...fileaccess.html
Thanks for these links.

> Also, make sure the permissions apply to subfolders - click "Advanced"
> and check the "Apply To" column.
I have found what the problem was. The ASPNET user I added was from another
domain. Now I have added the local ASPNET user and it works.
The audit thing really helped. Thank you very much!
Kind regards,
Christoffer S?rensen

Permission denied creating directory

Hi,

I have a created a simple file upload asp.net web page which also creates directories on the fly using the following code:

string fullpath = Server.MapPath(".\\..\\..\\" + path);
DirectoryInfo dir = new DirectoryInfo(fullpath);
if(!dir.Exists)
dir.Create();

Now the dir.Create() statement gives me a permission denied. The ASP.NET user has been giving full control to the directory and in IIS Admin the directory has write permissions for scripts set. There is no problem in uploading the file to an already created directory which I find extremely weird!

What goes wrong ?

My OS is Windows XP using .NET framework 1.1. All the latest security patches are installed.Hi Christoffer:

One way to trouble shoot these types of problems is to enable auditing
and find out "who" is getting the access denied message.

See:
http://www.pluralsight.com/keith/bo...leauditing.html
and
http://www.pluralsight.com/keith/bo...fileaccess.html

Also, make sure the permissions apply to subfolders - click "Advanced"
and check the "Apply To" column.

HTH,

--
Scott
http://www.OdeToCode.com

On Mon, 21 Jun 2004 08:25:40 -0700, Christoffer Srensen
<ChristofferSrensen@.discussions.microsoft.com> wrote:

>Hi,
>I have a created a simple file upload asp.net web page which also creates directories on the fly using the following code:
>string fullpath = Server.MapPath(".\\..\\..\\" + path);
>DirectoryInfo dir = new DirectoryInfo(fullpath);
>if(!dir.Exists)
> dir.Create();
>Now the dir.Create() statement gives me a permission denied. The ASP.NET user has been giving full control to the directory and in IIS Admin the directory has write permissions for scripts set. There is no problem in uploading the file to an already created directory which I find extremely weird!
>What goes wrong ?
>My OS is Windows XP using .NET framework 1.1. All the latest security patches are installed.
"Scott Allen" wrote:

> One way to trouble shoot these types of problems is to enable auditing
> and find out "who" is getting the access denied message.
> See:
> http://www.pluralsight.com/keith/bo...leauditing.html
> and
> http://www.pluralsight.com/keith/bo...fileaccess.html

Thanks for these links.

> Also, make sure the permissions apply to subfolders - click "Advanced"
> and check the "Apply To" column.

I have found what the problem was. The ASPNET user I added was from another domain. Now I have added the local ASPNET user and it works.

The audit thing really helped. Thank you very much!

Kind regards,

Christoffer S?rensen

Permissions Help with asp.net saving uploaded files

I have a function that uploads a file to a specific directory, making the
directory if it doesn't already exist.

This works, unless I try to upload a file to a pre-existing directory. If I
do that, I get this vague error:

Exception has been thrown by the target of an invocation.

From what I can tell, this is maybe a permissions issue?

'aspnet_wp account' has full control over the parent directory and any
directory it makes. The only oddity is that upon first creation of a
directory, I get prompted by the browser to enter my own network
username/pwd.

I'm completely stuck on this and really have no idea what to check for. Is
there anyway to get a more specific error message out of the application
than the one above?

-Darrel> I'm completely stuck on this and really have no idea what to check for. Is
> there anyway to get a more specific error message out of the application
> than the one above?

Aha. I figured that part out:

exc.InnerException.Message

Which gives me a much more specific answer...access denied for the
particular directory I'm trying to save to.

So, what should I check for? What is odd is that my application is just fine
creating the directory and then immediately uploading some files to it. It's
only on subsequent attempts does it get the access deined error.

-Darrel

Permissions needed for user to upload file to an App_Data subfolder

I saw a recent note here that user file uploads should be directed to a
subfolder of App_Data to avoid site recompilation each time a file is
uploaded. That worked fine on my development machine, but when I deployed to
a test site at my web host, it fails:
Access to the path '...\App_Data\PDFFiles\Filename.pdf' is denied.
How do I set permissions to allow writing a file into that folder? Is this
something I do in my page or site configuration, or do I need to contact the
web hosting company?This is usually done through the web host or their control panel. IIS is
giving the error because the directory permissions set don't enable the
ASP.Net (or sometimes another account such as Network Services depending
upon the windows server version) user account to write to the directory. So
yes, you'll need to start with the host. There may be an automated way to do
this in the control panel so check there first.
Hope this helps,
Mark Fitzpatrick
Microsoft MVP - Expression
"Paul Shapiro" <paul@.hideme.broadwayData.com> wrote in message
news:%23PwJ2hmgIHA.4396@.TK2MSFTNGP04.phx.gbl...
>I saw a recent note here that user file uploads should be directed to a
>subfolder of App_Data to avoid site recompilation each time a file is
>uploaded. That worked fine on my development machine, but when I deployed
>to a test site at my web host, it fails:
> Access to the path '...\App_Data\PDFFiles\Filename.pdf' is denied.
> How do I set permissions to allow writing a file into that folder? Is this
> something I do in my page or site configuration, or do I need to contact
> the web hosting company?
Thank you Mark. Folder permissions were not accessible in the web host's
control panel. I sent an email request and they added the permissions for
the web account. It's working now.
"Mark Fitzpatrick" <markfitz@.fitzme.com> wrote in message
news:eopxMJ8gIHA.2448@.TK2MSFTNGP03.phx.gbl...
> This is usually done through the web host or their control panel. IIS is
> giving the error because the directory permissions set don't enable the
> ASP.Net (or sometimes another account such as Network Services depending
> upon the windows server version) user account to write to the directory.
> So yes, you'll need to start with the host. There may be an automated way
> to do this in the control panel so check there first.
> Hope this helps,
> Mark Fitzpatrick
> Microsoft MVP - Expression
> "Paul Shapiro" <paul@.hideme.broadwayData.com> wrote in message
> news:%23PwJ2hmgIHA.4396@.TK2MSFTNGP04.phx.gbl...

Permissions Problem

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

AndyWhat is the error?

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

"Andy" <andy@.thecodeclinic.net> wrote in message
news:0e7c01c3b42b$a2d2c020$a501280a@.phx.gbl...
> 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
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)

>--Original Message--
>What is the error?
>--
>Kevin Spencer
>..Net Developer
>Microsoft MVP
>Big things are made up
>of lots of little things.
>"Andy" <andy@.thecodeclinic.net> wrote in message
>news:0e7c01c3b42b$a2d2c020$a501280a@.phx.gbl...
>> 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
>
>.
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 ;-)

>--Original Message--
>What is the error?
>--
>Kevin Spencer
>..Net Developer
>Microsoft MVP
>Big things are made up
>of lots of little things.
>"Andy" <andy@.thecodeclinic.net> wrote in message
>news:0e7c01c3b42b$a2d2c020$a501280a@.phx.gbl...
>> 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
>
>.
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.

"Andy" <andy@.thecodeclinic.net> wrote in message
news:115701c3b431$a6b765a0$a301280a@.phx.gbl...
> 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)
>
> >--Original Message--
> >What is the error?
> >--
> >Kevin Spencer
> >..Net Developer
> >Microsoft MVP
> >Big things are made up
> >of lots of little things.
> >"Andy" <andy@.thecodeclinic.net> wrote in message
> >news:0e7c01c3b42b$a2d2c020$a501280a@.phx.gbl...
> >> 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
> >.
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/defaul...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
>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.
>.