Understanding modifedField() Table method in DAX 2012
modifiedField() method to perform any actions after the field is modifed
Create new table with 2 fields ItemId and ItemNameDisplay from Extended Data Types node in AOT then Override
modifiedField() in Table’s method node, something likes:
modifiedField() method is located on tables and it is called by a form (or a dataset) when any field is changed. It has field ID as a parameter and therefore it is very easy to write code reacting to a change of a particular field. It is so easy that the
modifiedField() method is often used even in such cases, when it really shouldn’t be used.
If you want to get previous field value in the
modifiedField() for comparative purpose, you can use