ProWindow calling method during an event

JeanDesormeaux — Sat, 18 Sep 2021 02:13:35 GMT

Hi,

I use the RowDeletedEvent to validate if it's permitted to erase a data or put it in history depending of user choice :

RowDeletedEvent.Subscribe(OnRowDeleted, this.Table);

This is an async method and I try to set a property on my window before calling ShowDialog and nothing happing because of cross thread calling.

Example:

await QueuedTask.Run(() => { ProWindowClass pwc = new ProWindowClass(); pwc.SetShowDateInput(Visibility.Visible); pwc.ShowDialog(); });

The dialog is not showing up. But if I put in comment SetShowDateInput, the dialog is showing up.

I tried to use a async method for SetShowDateInput and use his own Dispatcher and I always got this error: The calling thread cannot access this object because a different thread owns it.

What is the best practice to set control property of ProWindow during an event calling a await method?

Thank you,

Jean

Re: ProWindow calling method during an event

JeanDesormeaux — Sat, 18 Sep 2021 15:41:48 GMT

Ok I finally found how to call my Form, set parameters and call ShowDialog.

I needed to pass through FrameworkApplication.Current.Dispatcher.Invoke

Windows.DemandeSuppressionHistorique.ChoixEnum choix = Windows.DemandeSuppressionHistorique.ChoixEnum.Annuler; FrameworkApplication.Current.Dispatcher.Invoke(() => { Windows.DemandeSuppressionHistorique wnd = new Windows.DemandeSuppressionHistorique(); wnd.DemandeSupressionIsEnable(false); wnd.ShowDialog(); choix = wnd.Choix; });

Hope that could help someone eventually!

Jean

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ProWindow calling method during an event

Re: ProWindow calling method during an event