I know from previous posts that this "feature isn't supported" out of the box from telerik.
I was wondering if it was possible to get the filter being applied to the combobox from the client side and allow it be cleared from a button click. I want to try and customize the behaviour of the combobox so that I can filter items in the list which can then be checked individually or JUST the filtered items to be selected by the check all. However I find it bit clunky at present to clear the filter out of the combobox after selecting items.
Another alternative idea is to add a search textbox as the first item in combobox (similar as seen in kendo grid filters), is this level of customization available in radcombobox control?
Any help appreciated!