How to check if a file is open
in [VB.NET]
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From: Dino Buljubasic on 22 Sep 2005 16:09 My application creates some temporary files that are deleted when my application terminates. However, if a temp file is open, it will not be deleted and application will crash. How can I check if a file is open before deleting it Something like this If File(fileName).IsOpen then File(fileName).Close end if File(fileName).Delete Thank you _dino_
From: Curtis on 22 Sep 2005 17:49 I think this is the code you want If File.Exists(path) Then File.Delete(path) End If Curtis "Dino Buljubasic" <dino(a)noplacelikehome.com> wrote in message news:fo36j1plodi6utg9e00iqtvev83b7kfu9u(a)4ax.com... > My application creates some temporary files that are deleted when my > application terminates. > > However, if a temp file is open, it will not be deleted and > application will crash. > > How can I check if a file is open before deleting it > > Something like this > > If File(fileName).IsOpen then > File(fileName).Close > end if > > File(fileName).Delete > > Thank you > _dino_
From: Dino Buljubasic on 22 Sep 2005 18:11 No this will not work since if file exists it can still be open so call to File.Delete(path) will crash the application I need some way to check if the file is open before caling Delete On Thu, 22 Sep 2005 16:49:15 -0500, "Curtis" <csch_nu(a)hotmail.com> wrote: >I think this is the code you want >If File.Exists(path) Then > File.Delete(path) >End If > >Curtis > >"Dino Buljubasic" <dino(a)noplacelikehome.com> wrote in message >news:fo36j1plodi6utg9e00iqtvev83b7kfu9u(a)4ax.com... >> My application creates some temporary files that are deleted when my >> application terminates. >> >> However, if a temp file is open, it will not be deleted and >> application will crash. >> >> How can I check if a file is open before deleting it >> >> Something like this >> >> If File(fileName).IsOpen then >> File(fileName).Close >> end if >> >> File(fileName).Delete >> >> Thank you >> _dino_ >
From: Filipe Marcelino on 23 Sep 2005 04:33 Hi, you can try to open the file in exclusive mode. Private Function IsFileOpen(ByVal filename As String) As Boolean Try System.IO.File.Open(filename, IO.FileMode.Open, IO.FileAccess.Read, IO.FileShare.None) FileClose(1) Return False Catch ex As Exception Return True End Try End Function Regards, Filiep Marcelino
From: Paul Clement on 23 Sep 2005 13:44
On 23 Sep 2005 01:33:01 -0700, "Filipe Marcelino" <fmarcelino(a)gmail.com> wrote: ? Hi, ? ? you can try to open the file in exclusive mode. ? ? Private Function IsFileOpen(ByVal filename As String) As Boolean ? Try ? System.IO.File.Open(filename, IO.FileMode.Open, ? IO.FileAccess.Read, IO.FileShare.None) ? FileClose(1) ? Return False ? Catch ex As Exception ? Return True ? End Try ? End Function Just make sure to check the Exception for the "file in use" error before returning True. Paul ~~~~ Microsoft MVP (Visual Basic) |