Handled Exception

[sgrya1]

Hi,

In a parent subroutine with a Try/Catch I want to check if a file is open.
If the file is open then it seems to create an exception in the ?parent? routine which means that it doesn't continue with the code.
Is there any way to handle the exception in the subroutine so that it doesn't interfere with the parent?

And is the a term for a parent subroutine?

    Function IsFileOpen(ByRef FileName As String) As Boolean
        Dim blnRetVal As Boolean = False
        Dim fs As FileStream = Nothing
        Try
            fs = File.Open(FileName, FileMode.Open, FileAccess.Read, FileShare.None)
        Catch ex As Exception
                blnRetVal = True
            Finally
                If Not IsNothing(fs) Then
                    fs.Close()
                End If
            End Try
        Return blnRetVal
    End Function