How do I format the datetime to date when grouping by a date? The date column is formatted correctly in grid but reverts back to a datetime format when grouping by it.
There is a GroupHeaderTemplate that can be used to specify custom group headers:
https://blazor.radzen.com/datagrid-group-header-template
This is the DateTime in your case:
UPDATE:
In the next release later this week it will use automatically column FormatString: