Hi Darryl,
Greetings from Syncfusion support.
By default while using checkbox filter, it will query 1000 data only, due to large data transfer may leads to serialization issue and performance downgrade. After that from the fetched records, we will get the distinct value and display the checkbox items. From the shared sample we could see that for the first 100 records there is no other different dates than 30/04/2020 and null.
So to achieve your requirement we can increase the filter count as like the below code example.
|
public actionBegin(args) {
if (args.requestType == "filterchoicerequest") {
args.filterChoiceCount = 3000; //here, you can override the default take count of the filter records
}
} |
Please get back to us, If you need further assistance.
Regards,
Manivel