Hello Jorge Delgado-Lopez,
At this time the NullText functionality for a multiline RadTextBox is not implemented. However, you make your own implementation, which will give you the same visual results. I have demonstrated it in the sample project attached. The approach concerns setting Text
properties of the RadTextBox.
Regarding the "\r\n" escape sequence, you do not need it when setting Text
in RadTextBox. The text which cannot be put on the current line will automatically be transferred to a new line.
If you have additional questions, feel free to contact me.
the Telerik team
Check out Telerik Trainer
, the state of the art learning tool for Telerik products.