Hi all, Never mind, we've figured out what it was.
When the set property was called, it called an Update Property method in the base class to hide the details of the property it ultimately had to raise the change event for. In the base class, it used reflection to identify the property name, remove the set_ and then raise the property as part of the INotifyPropertyChanged interface. The problem is that to do this, it actually used the stack trace, walking one level down the stack to the property call, and then performing a substring to get the usable name of the property. But in a release scenario, optimisation occurs, and the methods are inlined, meaning that walking one level down the stack will return a different method name. So this has now been removed/fixed and everything is now working! Regards, Tony On Fri, Feb 4th, 2011 at 2:52 PM, [email protected] wrote: > Hi Everyone, > > We have a very strange problem at the moment whereby our Silverlight 4 > application will not > display the contents of ComboBox on (some) client machines. > > We have an observable collection in our view model, with a simple binding > expression on the > ItemsSource on the ComboBox. In the page's Loaded event, we are calling a > domain service to > retrieve the items, then in it's Completed event we are storing the > returned items into the > collection. Nothing fancy. > > Firstly, when we deployed the solution in Release mode, the combobox's had > no values. I opened > fiddler and saw the request and response from the domain service, and it > was in fact successfully > returning the correct data to the client. However the combobox's had no > data in them. > > I rebuilt in Debug|Any CPU configuration, hit the same URL and it worked > straight away - the > combobox's were filled with data. Problem solved? Not quite. > > We then gave the URL to someone else to test (on the same network/subnet) > and the combobox s > were empty again. It works on 5 machines, and doesn't work on the rest. I > checked fiddler, and > the response is coming back with all the data - Silverlight just doesn't > populate the comboboxes. > > We have tried a number of things - IE no addons, chrome incognito's, cross > domain and client > access policies... nothing seems to make a difference. We've tried running > the browsers as > administrator, we've even tried on very old machine running IE6, same > issue (ie no UAC or > anything strange there). No anti-virus installed on any of the machines. > At a complete loss. We've > tried machines on the company domain, and off the domain with no > difference - different operating > systems (xp/win7). > > Does anyone have any ideas or solutions for me on this problem? Seems like > there's something > installed on the machine doing it? > > Cheers, > > Matt (via Tony's email) > > > _______________________________________________ > ozsilverlight mailing list > [email protected] > http://prdlxvm0001.codify.net/mailman/listinfo/ozsilverlight > > > _______________________________________________ ozsilverlight mailing list [email protected] http://prdlxvm0001.codify.net/mailman/listinfo/ozsilverlight
