Hi, RadComboBox does not having direct way to set its height, not dropdown height. It is required functionality because its height should be as per website design.
ComboBox keeps the dropdown aligned to either sides of input field. If due to content overflow e.g in a small frame input field is placed slightly out of viewport then it would be better to check the boundaries if ScreenBoundaryDetection is enabled and keep the dropdown in view and not necessarily aligned with input.
This feedback item has been raised from this forum thread: http://www.telerik.com/community/forums/aspnet-ajax/combobox/enablecheckallitemscheckbox-all-entry-doesnt-fire-onitemchecked-event.aspx This issue was first raised back in Sep '11 as it was suggested that 'it was in the plan for a future release'. I've added this item here in the feedback portal to ensure that it's not got lost
Based on customer feedback: The RadFormDecorator decorates most native input controls, but does miss some, namely in ComboBox and ListBox. As this [the lack of decoration] is something advertently done, due to various issues in different browsers, we should thread carefully.
Based on customer feedback: In certain cases, the client side autowidth does not perform well enough or the results are not exactly what one would expect. Instead, server side autowidth could do the job. True, there are drawbacks to this approach, like font name and font size, but it could be configurable.
Please check the attached images for more details.