For now, We can drag or paste Images into RadRichTextBox. But still can't drag or paste files like RichTextBox in Winform. It's very inconvenient!
Hi Yi Zhou, This feature is already in our to-do list. Please follow the item at http://feedback.telerik.com/Project/143/Feedback/Details/153172-implement-option-to-embed-different-files-and-objects . I'm closing this item to avoid duplication. Thank you for your understanding. Regards, Tanya