i grabbed the telerik editor and used in my WPF application, now i need to blink in red when the user exceeds the character length, but i'm unable to accomplish that, i can't even change the borderbrush of the RadRichTextBox that is within the Telerik Editor.
You need to edit the control template (see attached). This way you will be able to see the elements and add an animation to the border (see attached).
I hope this helps. Should you have any other questions do not hesitate to ask.
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