Security permission of file 1

[eelisdotnet]

Hi

I'm trying to check a file for its security permissions to determine if it is writeable or not.
The code looks like that:

Function IsFileWritePermission(ByVal sFileName As String) As Boolean
Try
Dim fp As FileIOPermission
fp = New FileIOPermission(FileIOPermissionAccess.Write, sFileName)

fp.Demand()

Return True
Catch ex As Security.SecurityException
Return False
Catch ex As Exception
Return False
End Try
End Function




The file i'm testing has a Deny Write permission but the function always return true. If I try to open the file to write, it raises an error exception for write permission.

Thanks.

 

[ThatRickGuy]

I flipped through the documentation on FileIOPermission, it looks like it's only designed to set permissions. So in this case it is likely setting the permission to write access, then returning true.

If you just need local file attributes, you can get them with:

Dim fa As FileAttribute
fa = System.IO.File.GetAttributes("c:\test.txt")
Debug.Write(fa.ToString)

I'm still looking for code to grab the windows/AD permissions though.

-Rick

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