VB.Net 3.5 Check if file is in use

Question

I have an update program that is completely independent of my main application. I run the update.exe to update the app.exe. To check to see if the file is in use, I move it

Answer 1

The same code using "using" :)

Public Function FileInUse(ByVal sFile As String) As Boolean
 Dim thisFileInUse As Boolean = False
 If System.IO.File.Exists(sFile) Then
     Try
       Using f As New IO.FileStream(sFile, FileMode.Open, FileAccess.ReadWrite, FileShare.None)
                ' thisFileInUse = False
       End Using
     Catch
       thisFileInUse = True
     End Try
 End If
 Return thisFileInUse
End Function