Hello Vitor,
What I can advise is that you use JavaScript to modify the text in the tooltip via its
client-side api. For example in the
OnClientShow event you can use the RadToolTip's method get_text() to obtain the text from the tooltip (of course any other means works equally well, this depends on the way you pass this text). Then modify it via JavaScript and use set_text() to pass it back to the tooltip. You may find useful
this article from the net and
this one as well on working with strings.
All the best,
Marin
the Telerik team
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