Thank you for writing.
RadRichTextBox does not support this functionality and cannot init its content using the Text property in design-time. I logged this feature request in our Public Issue Tracking System
. The content setup by Text property with html support in design-time will be added in one of the next our releases. Currently, you can load the content manually. Here is a example:
HtmlFormatProvider provider =
radRichTextBox1.Document = provider.Import(radRichTextBox1.Text);
Please view the result in the attached screenshots.
Thank you for your time and cooperation.
Your Telerik points have been updated.
the Telerik team