--- In [email protected], "foobone9" <foobo...@...> 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?
