5 Answers, 1 is accepted
Currently, RadRichTextBox doesn't support native watermarking. You can emulate the feature by using custom UI layers, but import/export will not preserve the watermark. It is on our to-do list, but there is no schedule for now. In the meantime, you can vote for it in the PITS, here's the link: http://www.telerik.com/support/pits.aspx#/details/Issue=3208 . Let us know if we can assist you any further.
All the best,
Ivailo Karamanolev
the Telerik team
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Custom UI layers can be used to display a watermark, but on saving, the image will not be included in the exported document. Furthermore, if you open a document which includes a watermark, the watermark will not be imported either.
As Ivailo mentioned, genuine watermarks, along with import and export in different file formats is on our to-do list, but has not been scheduled yet.
Iva Toteva
the Telerik team
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If the watermark is implemented using the custom layers feature, it will be printed when using the native print of Silverlight.
RadRichTextBox also has an HTML printing, which uses the browser to print the content of the documents. In this case, the watermark will not be printed.
Iva Toteva
the Telerik team
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