I've tried every possible way to filter an radzendatagrid

with IEnumerable<IDictionary<string, object>> source but it wont work. If it helps this data grid is on a pop up dialog box which had some issues before. i have tried every way now i'm coming to a point where i'm creating a custom search filter if it doesn't work but i'm dealing with by calling the load data event which again i don't understand as i just started using radzen(this is my first application btw) below is the page code for the popup if you wish to try just create sme dummy data and plug it in various variables.

This demo is using exactly such data and it works: