Hi Orion,
You can learn how the Paste option works in the following article
Pasting Content Overview.
the RadEditor’s paste functionality uses the browser’s DOM clipboard events.Therefore, any content pasted, is first processed by the browser. Images, HTML, MS Word, plain text etc., are data types that are first translated to HTML by the browser and then fetched via the clipboard event’s data to the editor. The content is already translated from Word syntax to HTML and RadEditor just consumes it. RadEditor does not have an idea what the content originally looked like and the pasting is controlled by the browser but not by RadEditor, which is similar to an enhanced <asp:TextBox> control.
If you'd like to change something in the Pasted content prior the insertion in the editor, you can attach to the
OnClientPasteHtml client event of RadEditor, check for the Paste command execution and modify the content provided by the args.get_value() method.
Regards,
Rumen
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