Control Exception Message

[campster]

I'm opening an Excel template and checking the format of the template. If the format is not correct I want to send the appropriate message. I got it to work but it seems like a excessive use of try-catch. Is there a better way?

Try
            oExcel.Workbooks.Open(Filename:=m_inFile)
            Try
                oSht = CType(oExcel.Workbooks(1).Worksheets("control"), Excel.Worksheet)
            Catch ex As Exception
 
            End Try
            If oSht Is Nothing Then
                Throw New System.Exception("Invalid Template Format: No Control Sheet")
            End If
            oExcel.Visible = m_visible
        Catch ex As Exception
            MessageBox.Show("TemplateReader.Open: " & ex.Message.ToString)
        End Try