Silverlight dataGrid binding with ria Service doesn' work

Question

hi every one i'm new to Silverlight and it's totally driving me crazy !!

i'm using SL4 and trying to bind datagrid with a Domain Service Query:

what i did exactly is i generate an ado.net entity model from my database, then create a domain Service class from this model.

then in my page i put Datagrid & button.

in the click event for this button i write this code:

RRDomainContext rr = new RRDomainContext();

this.dataGrid1.ItemsSource = rr.Rooms;

this.rr.Load(this.rr.GetRoomsQuery());

when this method executed the nothing changed at the datagrid.

can anyone help me with this ?

Answer 1

Silverlight is async only, so if the query is a large one it can either take a long time to return, or if it's a large query that goes over the 64k limit it can fail and you don't know about it.

As a thought, if you're using RIA services to bind to something reasonably simple, use the "Data Source" for the entity, it's a lot less likely to give issues.

http://blogs.msdn.com/b/vsdata/archive/2009/12/01/the-data-source-window-support-in-wcf-ria-services.aspx