Hi Greg,
Thanks for using Syncfusion products.
Before proceeding with your query we need below details to understand your requirement,
1. Share the details of filter type that you have used.
2. You have mentioned like “only the keyboard”. Do you want to prevent the mouse actions?
3. If you are using FilterBar type then we can move between the filter textbox using tab key and enter key to apply filtering.
The provided information will help to analyze the issue and provide you the response as early as possible.
Regards,
Gowthami V.