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WPF Report Viewer events fires twice

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Aleksey
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Aleksey asked on 31 Oct 2019, 09:08 AM
When WPF Report Viewer inside other control (e.g. TabControl) all events (PrintBegin, PrintEnd, ExportBegin, ExportEnd etc.) fires twice, because Loaded event fires twice and you call AttachModelEventHandlers method also twice.

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Peter
Telerik team
answered on 05 Nov 2019, 08:38 AM

Hello Aleksey,

Thank you for elaborating on this issue. I have reproduced it and logged it for further research. As a token of gratitude I have updated your Telerik points.

Regards,
Peter
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Heiko
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answered on 30 Nov 2020, 02:22 PM

Hello Peter,

any news on that issue? I have spent a full day trying to find a bug in my programming until I came across this thread. Is there any workaround so the events don't get fired twice?

Regards
Heiko

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Neli
Telerik team
answered on 03 Dec 2020, 11:13 AM

Hi Heiko,

I am really sorry for the inconvenience this issue causes you and I completely understand that this could bring a negative impact on your work.  I converted the internal bug report into a public one- WPF Report Viewer events fires twice and I increased its priority. I also voted for it on your behalf, so when there is an update on the status you will receive a notification.

I also discussed the case with one of our developers, however, I am afraid that currently, we can not provide a workaround for the problem.

Please, let us know if you have any questions.

Regards,
Neli
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Nathan
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commented on 03 Nov 2021, 03:46 PM

Hi

This workaround/hack works for me:

DateTime lastTimeCalled; private void ReportViewer_InteractiveActionExecuting(object sender, InteractiveActionCancelEventArgs args) {

// if method was called within the last second, return

var now = DateTime.Now; if ((now - lastTimeCalled) < TimeSpan.FromSeconds(1)) return; lastTimeCalled = now; if (args.Action is CustomAction customAction) { // my code here } }

Thank you
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Aleksey
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Peter
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Heiko
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Neli
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