public static void OpenCloseSwitch()
{
if (_frmRecordingHistory == null)
{
_frmRecordingHistory = new FrmRecordingHistory();
var application = ArcMap.Application;
int hWnd = application.hWnd;
IWin32Window parent = new WindowWrapper(hWnd);
_frmRecordingHistory.Show(parent);
}
else
{
_frmRecordingHistory.Close();
}
}
private void FrmRecordingHistory_FormClosed(object sender, FormClosedEventArgs e)
{
_frmRecordingHistory = null;
}