Disposing the component on click throws an exception

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Last Updated: 28 Jan 2021 09:51 by ADMIN

Release 2.21.1

Ivan

Created on: 21 Jan 2021 11:13

Category: ContextMenu

Type: Bug Report

Disposing the component on click throws an exception

I am using the context menu to open a modal window. When I click on the menu item the component throws an exception.

4 comments

ADMIN

Marin Bratanov

Posted on: 22 Jan 2021 20:49

Hello Ivan,

We are aware of this issue and it will be fixed as soon as possible. Maye as soon as next week.

Regards,
Marin Bratanov
Progress Telerik

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Ivan

Posted on: 21 Jan 2021 12:11

I've checked other examples of context menu, even the simplest
https://demos.telerik.com/blazor-ui/contextmenu/overview
also raises an error

Ivan

Posted on: 21 Jan 2021 12:03

Hello and thanks for your attention!
Unfortunately, adding a delay only solves the problem in a specific case, but for example, if the context menu is called from grid lines, the error repeats and adding a delay does not help.
The error is reproduced in your example of integrating the context menu into the grid, where there is no call to the modal window.

https://demos.telerik.com/blazor-ui/contextmenu/integration

Open the console and click on the context menu of the record line

ADMIN

Svetoslav Dimitrov

Posted on: 21 Jan 2021 11:24

Hello Ivan,

The reason behind the issue is the sequence of Blazor points:

Execute click logic for context menu item that opens a modal, forcing the menu to dispose
On hiding the menu, the focusout handler of the menu is triggered
Menu is disposed and the DotNetInstance is destroyed
Menu_Focusout handler tries to execute on already destroyed dotnetinstance

A workaround solution would be to add a delay before opening the modal window so that the Menu_Focusout handler has already passed.

Regards,
Svetoslav Dimitrov
Progress Telerik