I want to create html file with table, data and images , I want to create this as a custom control and place it in the radeditor toolbar as a button icon and provide the user to drag and drop that button to any position on the editor page.
Handling content area events can be implemented via the OnClientLoad event as shown in this help article.
As for the tool, this is explained and demonstrated in details in this online demo.
Regards,
Ianko
Telerik
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