Hi
Toanpham,
Thanks for contacting syncfusion forum.
Query: I would like enable showCheckbox (during enable
virtualization) at my first column in treegrid but when i do this i recevied an
error "ERROR
Error: Cannot read properties of undefined (reading 'length')"
Based on your
query, we understand you are facing the script error while using the checkbox
column with virtualization feature. The checkbox column is not supported
with the virtual scrolling feature because it is not feasible to maintain the
checkbox selected records with this functionality.
Kindly get back to us for further assistance
Regards,
Pon
selva