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First of all, sfDataGrid is a great product. It is very useful, and I am grateful for the huge effort it took to make it available to many users around the world, Thank you Syncfusion.
In my audit reporting app, I have a use case where I need to filter a null value column and display it to the responsible users so they can fix the data with appropriate values in the transaction system. I realized that I cannot filter the null data programmatically, but it is possible in the UI by using the null/not null options. However, this option is not available programmatically.
I have tried many ways to overcome this limitation by using existing filters, but I have been unsuccessful. I hope that this feature will be added to sfDataGrid in the future, as it would be useful to many users.