If I have a form with a data grid and a data view, after I save the contents within the data view, can I dynamically filter the data grid below to ensure the new entry shows up? (i.e. if the entity in my data view has a DateTime attribute, can I filter the data grid on this attribute to ensure the entry is shown below)? If not, is there a work around?
If by filtering you mean using XPath constraints... well, I don't think you can use dynamic (calculated) data in an XPath constraint.
So no, it wouldn't be possible.
But why could you not use the xpath constraint:
Just copy the same form with this xpath constraint and let it open after the save action.