Access denied error while writing a file to the file system - myfileupload.saveas() throws system.unauthorizedexception

Question

hi,
as part of my requirement , i have to perform read and  write  operations of  few files [ using the file upload control in my custom visual web part] and on submit button click.
but while writing these files - with the help of  fileupload control - and when i use  myfileupload.saveas(mylocation);
- i am saving these files into my D:\ drive of my server , where i am executing my code -, am getting access denied error.
it throws system.unauthorizedexception.
i have given full control on that folder where i was trying to store my attached files. and also  after following asp.net forums,
i have added  iusr group added and performed all those steps such that, the file is saved in my D:\ drive.
but unfortunately  that didnt happen.
also
a) i am trying the code with runwithelevatedprivileges(delegate() )  code
b) shared the drive within the  d :drive where i want o save the files.
c) given the full privieleges for the app pool identity- in my case , its
network service.
the  other strange thing is that, the same code works perfectly in  other machine, where the same sp, vs 2012  etc were installed .
would like to know, any other changes/ steps i need to make it on this  server, where i am getting the  error.
help is  appreciated!

Answer 1

vishnuS1984 wrote:
Hi Friends,
I have gone through scores of examples and i am failing to understand the right thing to be done to copy a file from one directory to another. Here is my class...So let's see... C:\GetMe1 is a directory on your machine, right? And this is what you are doing with that directory:
public static void copyFiles(File src, File dest) throws IOException
// dest is a 'File' object but represents the C:\GetMe1 directory, right?
fout = new FileOutputStream (dest);If it's a directory, where in your code are you appending the source file name to the path, before trying to open an output stream on it? You're not.
BTW, this is awful:
catch (IOException e)
IOException wrapper = new IOException("copyFiles: Unable to copy file: " +
src.getAbsolutePath() + "to" + dest.getAbsolutePath()+".");
wrapper.initCause(e);
wrapper.setStackTrace(e.getStackTrace());
throw wrapper;
}1) You're hiding the original IOException and replacing it with your own? For what good purpose?
2) Even if you had a good reason to do that, this would be simpler and better:
throw new IOException("your custom message goes here", e);
rather than explicitly invokign initCause and setStackTrace. Yuck!