Check for ReadOnly File is in Use

All,
I am working on one product where we need to check for physical file
is in use (if it is open by other application). What I found out is that I
am able to trap for those files whose attribute is not Set as ReadOnly. I
have done this by opening file using FileStream Object opening in Edit mode
with No Shared. But if I am try to apply same logic for ReadOnly files, then
it throws NonAuthorized exception. This exception is also raised even when I
try to open this file even if this is not in use by other application.

Any suggestion would be helpful

Thanks
Mayur Chauhan

J
Fri May 09 09:43:15 CDT 2008


Here is the code : you can check FileAttribute

Imports System.IO

Dim Filepath as string = "c:\\myFile.txt"

If (File.GetAttributes(Filepath)) Then
If (FileAttributes.ReadOnly = FileAttributes.ReadOnly) Then
MsgBox("File is read only")
End If
End If

JT
Fri May 09 09:49:01 CDT 2008

Here is the code : You can use FileAttributes to do this

Imports System.IO
Dim Filepath as string = "c:\\myFile.txt"
If (File.GetAttributes(Filepath)) Then
If (FileAttributes.ReadOnly = FileAttributes.ReadOnly) Then
MsgBox("File is readd only")
End If
End If

"Mayur H Chauhan" wrote:

> All,
> I am working on one product where we need to check for physical file
> is in use (if it is open by other application). What I found out is that I
> am able to trap for those files whose attribute is not Set as ReadOnly. I
> have done this by opening file using FileStream Object opening in Edit mode
> with No Shared. But if I am try to apply same logic for ReadOnly files, then
> it throws NonAuthorized exception. This exception is also raised even when I
> try to open this file even if this is not in use by other application.
>
> Any suggestion would be helpful
>
> Thanks
> Mayur Chauhan
>
>
>

Mayur
Mon May 12 10:05:22 CDT 2008

Thanks for you reply.
But here what I want to know is whether ReadOnly file is currently Open or
not. In Other words, Whether ReadOnly file is currently used by any other
application.


--
Thanks and Regards,
Mayur H Chauhan

Software Developer
www.myarcane.com
"JT" <JT@discussions.microsoft.com> wrote in message
news:E02197DB-CDA5-4CA2-9BD4-CE3AD26B8022@microsoft.com...
> Here is the code : You can use FileAttributes to do this
>
> Imports System.IO
> Dim Filepath as string = "c:\\myFile.txt"
> If (File.GetAttributes(Filepath)) Then
> If (FileAttributes.ReadOnly = FileAttributes.ReadOnly) Then
> MsgBox("File is readd only")
> End If
> End If
>
> "Mayur H Chauhan" wrote:
>
>> All,
>> I am working on one product where we need to check for physical
>> file
>> is in use (if it is open by other application). What I found out is that
>> I
>> am able to trap for those files whose attribute is not Set as ReadOnly. I
>> have done this by opening file using FileStream Object opening in Edit
>> mode
>> with No Shared. But if I am try to apply same logic for ReadOnly files,
>> then
>> it throws NonAuthorized exception. This exception is also raised even
>> when I
>> try to open this file even if this is not in use by other application.
>>
>> Any suggestion would be helpful
>>
>> Thanks
>> Mayur Chauhan
>>
>>
>>