Skip to main content
Home Forums Silverlight Programming WCF RIA Services If client side Linq would cause async call?
2 replies. Latest Post by ColinBlair on May 11, 2009.
(0)
kent.zhou
Member
109 points
397 Posts
05-11-2009 2:36 PM |
If following code at client side is applied to Ria service, it's supposed to get the data from memory of cache:
context.Employee.Where(e => e.DepartmentID == id);
If there is no data available for above code(for example, first time call), will it cause async call to get data from ria service?
mathewc
614 points
111 Posts
05-11-2009 4:13 PM |
No - you have to explicitly load data into the client DataContext. The above is just a client side LINQ query against the results (if any) currently in the EntityList<Employee>.
ColinBlair
Contributor
6579 points
1,291 Posts
05-11-2009 4:31 PM |
I assume you are looking at the difference between ADO.NET Data Services and RIA Services. A DataServiceContext would be exposing Employee as a DataServiceQuery<Segment>. The RIA Services DomainContext exposes Employee as an EntityList<Employee>. In effect, DataServiceContext's Employee is the equivalent of DomainContext's GetEmployees and DataServiceContext's Employee is the equivalent of going to the DomainContext's Entity collection and finding all of the Employees in it.
If client side Linq would cause async call?