Hi Elif,
Greetings from Syncfusion support
We understand that you like to implement dropdownlist in the filter menu. By default, in our EJ2 Grid, we are rendering FilterMenu with autocomplete component. You can render the dropdownlist as custom component in the filter menu.
And in your query, you have mentioned that “two independent dropdown checkbox list”, we need more information about this query. So please share the below details that will be helpful for us to provide better solution.
1) Please share your exact requirement scenario with detailed description.
2) In your query you have mentioned that “i want to create multiple lists in one filter”, so please your requirement scenario with pictorial representation.
3) Please confirm if you like to render the two dropdownlist in one column filter menu. Please refer the below screenshot.
Screenshot:
4) If yes, please share the details about what type of datasource you are binding to those dropdown and also confirm you like to filter the column by using those two dropdowns.
Regards,
Rajapandi R