Try
      If My.Computer.FileSystem.FileExists("path") = True Then
           My.Computer.FileSystem.DeleteFile("path", FileIO.UIOption.AllDialogs, FileIO.RecycleOption.SendToRecycleBin)
      Else
          MsgBox("il file non esiste")
      End If
  Catch ex As Exception
      MsgBox(ex.Message)
 End Try