Hi Ashish,
We are very sorry for the long delay.
Currently we don’t have direct support for BETWEEN operations in filter popup. Attached is a sample which contains different operations that can be performed in filter popup in Grid WPF. We can achieve the BETWEEN operation directly in the code, such that only the condition satisfied values will be displayed in Grid or else we can achieve it by customizing the filter pane.
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=CS603807423-New818298801.zipPlease let us know the further details.
Thanks,
Varun