"Nicole Calinoiu" <calinoiu REMOVETHIS AT gmail DOT com> wrote in message
news:uRqsIGJMFHA.3320@TK2MSFTNGP15.phx.gbl...
> Bruce,
>
> Given your use of the FileStream constructor, the file access type is
> defaulting to FileAccess.ReadWrite. This may be what is causing your
> problem. Even with write access granted, if the file is marked as
> read-only or is in use by another process, you may receive
> UnauthorizedAccessException on any attempt to open it for writing.
>
> To avoid this problem, simply use a form of the FileStream constructor
> that allows you to specify both the FileMode and FileAccess types (e.g.:
> fs = new FileStream(IMAGE_FILE_PATH, FileMode.Open, FileAccess.Read);).
> If you do this, you should be able to revert to granting only read
> permissions on the file to the runtime user context.
>
> HTH,
> Nicole
>
>
> "Bruce" <bruce@coding-r-us.com> wrote in message
> news:%23nc09GEMFHA.3336@TK2MSFTNGP09.phx.gbl...
>>
>> I need to read a file within a web service, but am having (apparently)
>> permissions problems. Code snip is posted below.
>> When I attempt to open a filestream to read a file, I get an
>> UnauthorizedAccessException exception.
>>
>> I have granted full permissions on the directory to IUSR_machineName,
>> ASPNET, Network Service, and Local Service accounts. But granting these
>> did not fix the problem.
>>
>> Recommendations? Also, how do I determine definatively what account
>> needs to be granted permissions for an ASP.NET process (or, in this case,
>> a web service.)
>>
>> Thanks,
>> Bruce
>>
>> ------------------------
>>
>> [WebMethod]
>> public byte [] GetBitmap()
>> {
>> return GetBitmapPrivate();
>> }
>>
>> private byte[] GetBitmapPrivate()
>> {
>> FileStream fs = null;
>> FileInfo inf = new FileInfo(IMAGE_FILE_PATH);
>> try
>> {
>> fs = new FileStream(IMAGE_FILE_PATH, FileMode.Open);
>> }
>> catch ( Exception ex )
>> {
>> Console.WriteLine( ex.ToString() );
>> }
>> byte [] bytes = new byte [inf.Length];
>> fs.Read(bytes, 0, (int)inf.Length);
>> fs.Close();
>> return bytes;
>> }
>>
>
>

"Bruce" <bruce@coding-r-us.com> wrote in message
news:%23nc09GEMFHA.3336@TK2MSFTNGP09.phx.gbl...
>
> I need to read a file within a web service, but am having (apparently)
> permissions problems. Code snip is posted below.
> When I attempt to open a filestream to read a file, I get an
> UnauthorizedAccessException exception.
>
> I have granted full permissions on the directory to IUSR_machineName,
> ASPNET, Network Service, and Local Service accounts. But granting these
> did not fix the problem.
>
> Recommendations? Also, how do I determine definatively what account needs
> to be granted permissions for an ASP.NET process (or, in this case, a web
> service.)
>
> Thanks,
> Bruce
>
> ------------------------
>
> [WebMethod]
> public byte [] GetBitmap()
> {
> return GetBitmapPrivate();
> }
>
> private byte[] GetBitmapPrivate()
> {
> FileStream fs = null;
> FileInfo inf = new FileInfo(IMAGE_FILE_PATH);
> try
> {
> fs = new FileStream(IMAGE_FILE_PATH, FileMode.Open);
> }
> catch ( Exception ex )
> {
> Console.WriteLine( ex.ToString() );
> }
> byte [] bytes = new byte [inf.Length];
> fs.Read(bytes, 0, (int)inf.Length);
> fs.Close();
> return bytes;
> }
>

"Bruce" <coding-r-us.com@newsgroup.nospam> wrote in message
news:%23VKD04JMFHA.3196@TK2MSFTNGP10.phx.gbl...
> Nicole,
>
> Thanks! That worked, and I'm now able to move forward on the project.
>
> However, in the future I'll need to grant write access to the web services
> application. Thus, at that point, I'll still need to address the
> permissions issue. At least I think that was the problem. So, I'd still
> like to answer the question: how do I dermine what account the web service
> is using to read/write the files?
>
> Thanks,
> -- Bruce
>
> "Nicole Calinoiu" <calinoiu REMOVETHIS AT gmail DOT com> wrote in message
> news:uRqsIGJMFHA.3320@TK2MSFTNGP15.phx.gbl...
>> Bruce,
>>
>> Given your use of the FileStream constructor, the file access type is
>> defaulting to FileAccess.ReadWrite. This may be what is causing your
>> problem. Even with write access granted, if the file is marked as
>> read-only or is in use by another process, you may receive
>> UnauthorizedAccessException on any attempt to open it for writing.
>>
>> To avoid this problem, simply use a form of the FileStream constructor
>> that allows you to specify both the FileMode and FileAccess types (e.g.:
>> fs = new FileStream(IMAGE_FILE_PATH, FileMode.Open, FileAccess.Read);).
>> If you do this, you should be able to revert to granting only read
>> permissions on the file to the runtime user context.
>>
>> HTH,
>> Nicole
>>
>>
>> "Bruce" <bruce@coding-r-us.com> wrote in message
>> news:%23nc09GEMFHA.3336@TK2MSFTNGP09.phx.gbl...
>>>
>>> I need to read a file within a web service, but am having (apparently)
>>> permissions problems. Code snip is posted below.
>>> When I attempt to open a filestream to read a file, I get an
>>> UnauthorizedAccessException exception.
>>>
>>> I have granted full permissions on the directory to IUSR_machineName,
>>> ASPNET, Network Service, and Local Service accounts. But granting these
>>> did not fix the problem.
>>>
>>> Recommendations? Also, how do I determine definatively what account
>>> needs to be granted permissions for an ASP.NET process (or, in this
>>> case, a web service.)
>>>
>>> Thanks,
>>> Bruce
>>>
>>> ------------------------
>>>
>>> [WebMethod]
>>> public byte [] GetBitmap()
>>> {
>>> return GetBitmapPrivate();
>>> }
>>>
>>> private byte[] GetBitmapPrivate()
>>> {
>>> FileStream fs = null;
>>> FileInfo inf = new FileInfo(IMAGE_FILE_PATH);
>>> try
>>> {
>>> fs = new FileStream(IMAGE_FILE_PATH, FileMode.Open);
>>> }
>>> catch ( Exception ex )
>>> {
>>> Console.WriteLine( ex.ToString() );
>>> }
>>> byte [] bytes = new byte [inf.Length];
>>> fs.Read(bytes, 0, (int)inf.Length);
>>> fs.Close();
>>> return bytes;
>>> }
>>>
>>
>>
>
>