So I'm trying to figure out how I could go about writing a function that will look through the content of the cells and look for matches against a certain find string.  Ideally, this would highlight the cells in which the match is found.

Now, I've been working with the grid for a couple weeks and have created a rather nice converter class that is used by the CellValuePresenter to take the value of a given cell and construct the presentation content using a Label (I'm also looking into some readonly RichTextBoxes here and there, but that should be beside the point).  It all works like a charm, and I'm able to easily set formatting on individual fields, even those in the same column. 

As such, if I know the search value before the grid renders a given cell, then it works like a charm.  The problem is that this is supposed to be dynamic.  In other words, if I have a grid showing a bunch of records, and I change the search string and say "Find it", all the prior highlighting needs to go away and new highlighting applied to the matching cell values.

I've tried iterating through the records in the grid and for each field in each record, grabbing the CellValuePresenter for it (using FromRecordAndField) and changing the background color appropriately.  The problem (as I've seen in other postings) is that simply changing the properties of the presenter doesn't cause it to re-render.

If the presentation change was based upon some change to the underlying data (currently, I'm binding to a datatable), then I presume that it WOULD rerender the cell.  Barring that I'm not sure how to force/trick/coax it into doing what I want.

Any ideas?