--- In [email protected], "tntomek" <tnto...@...> wrote: > > --- In [email protected], "foobone9" <foobone9@> wrote: > > > > You might try enableAutoUpdate and disableAutoUpdate on ICollectionView, > > not sure if that has the desired affect or not. > > > > You could also put custom events in your model objects and manually > > dispatch collection events or call explicitly tell the grid when to update. > > > > --- In [email protected], "tntomek" <tntomek@> wrote: > > > > > > Hi, > > > > > > Is there any way to tell the ADG to not re-render itself immediately > > > after a propertyChanged even has been fired in the dataProvider? > > > > > > I have quite a wide row (lots of cells) and lots of custom logic that > > > updates these dependent properties on each row. i.e. calculated columns. > > > I am doing the calculations at dataProvider level vs labelFunctions. On > > > each "set" function of one of my cells in the row I raise a > > > "propertyChanged" event if the value was changed. Tracing through what > > > the ADG is doing I'm finding that its re-rendering each time I raise this > > > event even if its in the same row. Is there any way to tell the ADG to > > > wait a few milliseconds in case another propertyChanged event comes in so > > > as to render once instead of 10 times? > > > > > > If there is no ADG option what is the best pattern for this assuming I > > > want to do this in my underlying dataprovider objects. Should I raise > > > custom events and fake a itemUpdated once I know there are no more > > > changes? I don't see a clean way to do this however since I never really > > > know when I'm done, and using a timer or something of this nature seems > > > like a major hack. > > > > > > -Tom > > > > > > > By "explicitly tell the grid when to update" do you mean manually calling > itemUpdated at the View level?. If so does the grid actually "know" to > re-render only that updated row? It seems to me that it always re-rendered > all visible cells regardless of what was changed. So passing null or a real > row into itemUpdated has the same results. > > Also if I am to manully dispatch propertyChanged from my row, and I never > really know when I'm done updating all of my dependant cells is there any > good way to do this. i.e. Cell A update cell B and cell B update updates cell > E, and this can go on indefinatley. By catchign all property changed events > at Row level and using a timer of say 50ms i would almost guarantee that I > wouldn't rethrow more than a single propertyChanged event on any of the > updated cells in a row. Do you think there is a better way to do this? >
Follow up finding, Do 10 propertyChanged events from my dataProvider cause grid to refresh once or 10 times? My most recent observations show that it's just once, though for some reason the first load invokes my labelFunction 3 times. Is there any point in using enableAutoUpdate if grid appears to be 'smart' enough?
