Thanks for the feature request on the above issue. Somehow I managed to apply the header template changes inside databound event. But I wanted to implement show/hide columns (using hideColumn/showColumn functions). Both of these functions are not working for the child columns.
If I try to apply hideColumn or showColumn using field names of child columns, the columns are not working as expected. But It works only for parent columns. I have an requirement which involves when I hide parent column, relevant child columns are also should hide.
Kindly let me know if is there any workaround to apply the hide/show of child columns. Thanks.