void OpenZip(string fn) { // make sure this is a valid zip file if (!File.Exists(fn)) { return; } if (!C1ZipFile.IsZipFile(fn)) { return; } // open zip file try { _zipFile.Open(fn); } catch (Exception x) { MessageBox.Show(x.Message, "Open Zip File", MessageBoxButtons.OK, MessageBoxIcon.Error); } // update user interface UpdateUI(); }