Hi everyone, this is what i have:

Ajax extensions update panel

  ASPxHtmlEditor

    inside 1 default toolbar

    1 custom toolbar

      inside 1 custom dropdownlist, dropdowlist created by inheriting HtmlEditorToolbarDropDownBase, items are created by inheriting from CustomDropDownListItem.

Also i have asp.net button, on click that button on server side i am repopulating my custom dropdownlist with new items, it works fine, but it freezes whole editor on 3-4-5- seconds, it acts the same if my new items count is 5,10, 100, result the same- delaying, freezing editor, any ideas why is this happening? maybe i did something wrong or missed?

Thanks for any help and tips.

Hi!

It's difficult to say anything without looking at the project.
Could you please upload a sample project to our support center?

Hi oukey, thanks i will do it right now :)