There is no built-in functionality the allows you to make such customization out of the box. However, you can achieve your requirement by extracting and editing the default ControlTemplate
of the RadMaskedTextInput
When you extract the default template you will be able to find a ControlTemplate
" this template is applied to the ErrorMassage. Inside it you will be able to find a StackPanel
property is set to Horizontal
. Please try changing it to Vertical
and let me know if this works for you.
For your convenience I implemented this approach in the attached project.
Pavel R. Pavlov
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