I believe the file being locked is controlled by the machine where it
belongs, this makes sense as it would prevent multiple machines from writing
to it at once. Since you are disconnecting the share your app is unable to
remove the lock (close the file). It no longer has access to the file, so
how could it close it?
--
Thanks
Wayne Sepega
Jacksonville, Fl
Enterprise Library Configuration Console Module Generator
http://workspaces.gotdotnet.com/elccmg
"When a man sits with a pretty girl for an hour, it seems like a minute. But
let him sit on a hot stove for a minute and it's longer than any hour.
That's relativity." - Albert Einstein
"Daniel" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Is this a bug in .net file io? is there a work around?
>
> when writing a large file with using(StreamWriter ... if the network drive
> of the share is removed then the file is never closed. I tried doing the
> using clause, i tried both close and closehandle in the finaly clause. in
> all cases if a large file is being written to a network drive and the
> network drive is disconnected the file handle remains open. when i try to
> close, dispose, or closehandle it in the finaly clause it fails to close
> because it tries to flush the buffer in all of those cases. is this a bug
> in
> .net file io? is there a work around? do i need to write a dll in c that
> does file io to get around this? is there a workaround in .net? i also
> tried
> unlocking the file stream in the finaly clause and it still keeps the file
> open. is there any way tof orce a filestream to close a file without
> trying
> to flush the buffer in .net?
>
>
>
> here is the test case, i put break points in all the catch and finally
> clauses. in all cases i am unable to close the file when it throws error
> because i disconnect the network drive while it is in the middle of
> writing
> out the file.
>
> using System;
> using System.Runtime.InteropServices;
>
> namespace cleanclose
> {
> class Class1
> {
>
> [DllImport("kernel32.dll", CharSet=CharSet.Auto)]
> public extern static bool CloseHandle(IntPtr handle);
>
>
> static void Main(string[] args)
> {
> string strTempPath = @"\\123.123.123.123\netdistest\mb30file.txt";
> System.Text.StringBuilder sb = new System.Text.StringBuilder(100000000);
> for(int i=0;i<100000000;i++)
> {
> sb.Append("0");
> }
> string request = sb.ToString();
> System.IntPtr lasthandle = new System.IntPtr(-1);
> while(true)
> {
> System.IO.FileStream fs = null;
> System.IO.StreamWriter fr = null;
> try
> {
> fs=new System.IO.FileStream(strTempPath, System.IO.FileMode.Create);
> fr=new System.IO.StreamWriter(fs, System.Text.Encoding.UTF8);
> lasthandle = fs.Handle;
> }
> catch
> {
> try
> {
> CloseHandle(lasthandle);
> }
> catch(Exception eech)
> {
> int i234222 = 23 + 23;
> }
>
> }
> try
> {
> fr.Write(request);
> }
> catch(Exception ee1)
> {
> int i23 = 23 + 23;
> }
> finally
> {
> try
> {
> fr.Close();
> }
> catch(Exception ee2)
> {
> try
> {
> fs.Close();
> }
> catch(Exception ee3)
> {
> try
> {
> CloseHandle(fs.Handle);
> }
> catch(Exception ee4)
> {
> try
> {
> fs.Unlock(0, fs.Length);
> }
> catch
> {
> int isdfw = 23 + 23;
> }
> }
> }
> }
> }
> }
> }
> }
> }
>
>
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