Selection is not working well when virtualization is enabled

[Julien Barach]

Hi,

When enabling checkbox selection and virtualization, the selected rows are not correctly persisted whenever we show/hide children nodes afterwards.

Please see the repro link : https://blazorplayground.syncfusion.com/hXrdXoWLgebJNbhv

Check the 3 rows, then show some children nodes : the selection changes.

Looks like hundred of rows and virtualization + masked rows can also have a very weird behavior.

Finally is virtualization totally incompatible with selection ?

Regards,

Julien

[Shek Mohammed Asiq Abdul Jabbar]

Hi Julien Barach,

Greetings from Syncfusion support.

We have validated your query related to selection persistence in TreeGrid when virtualization is enabled. To retain the selection while using virtualization, you need to enable the PersistSelection property within the TreeGridSelectionSettings.

Code snippet

        <TreeGridSelectionSettings PersistSelection="true"  EnableToggle="true" Type="Syncfusion.Blazor.Grids.SelectionType.Multiple" />

 

Important Note

To ensure that selection persistence works correctly, it is mandatory to define a Primary Key column in the TreeGrid. This allows the component to uniquely identify records across virtualization and data operations.

Reference Documentation

🔗 https://blazor.syncfusion.com/documentation/datagrid/checkbox-selection#persist-selection

Sample:

https://blazorplayground.syncfusion.com/LjBxZeMgBTTTfQqP

Please let us know if you have any other queries.

Regards

Shek