We use the WPF 4 Infragistics v11.1 Masked Editors and Calendar date selectors throughout our app and at times we dont want to enforce validation. For example if a person selects a bad/incomplete date or a bad value for a mask and tries to shift focus off the control we dont want the red border or pop-up to happen warning the user. We will handle that later in our code.
What is the correct approach to disable validation on your controls?
Unfortunately this is not possible currently. If the value is invalid then the control will either want to restore the valid value or retain focus.