RadGridView already provides a rich UI for sorting, filtering and grouping.
If you want another custom UI, you have to create the context menu yourself and place any entries that you need in it. The associate it with your button.
Then with the help of our public API you can programmatically filter, sort and group the grid based on what the user has chosen from the context menu.
Here are the topics that describe how to perform these actions programmatically:
If you want the built-in UI to be aware of your programmatic filtering, sorting and grouping, you have to use the ColumnFilterDescriptor, ColumnSortDescriptor and ColumnGroupDescriptor classes respectively.
I hope this helps.
the Telerik team
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