Made validation in the simplest way on exceptions. Like this:
<TextBox Text="{Binding Path=Value, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=Window}, ValidatesOnExceptions=True}"/> Tell me how can I do this so that when I exclude, the text with the text of the exception is displayed on the TextBox? I mean the usual ToolTip, red like it and it highlights it.
