Entity Framework 6 - Knowledge Base (KB)

What are some alternatives to expanding in a LINQ to ADO.net Data Service query?

I am wondering if there are any alternatives to using the Expand key word when performing an LINQ to ADO.net Data Services query. The expand method does get me the data I am interested in, but it requires me to know all of the sub-objects that I am going...

How do I make the ADO.NET Entity Framework regenerate code?

I've run into a snag with a ADO.NET Entity Framework model and a ADO.NET Data Service that is making it available. The model and data service are compiling without any problems or warnings when they come out of source control. However when I run the ser...

The ObjectContext object has been deleted and cannot be utilized for any activities that require a connection.

I am developing a WCF Data Service. when I try accessing it from the client side, I get this exception :...The ObjectContext instance has been disposed and can no longer be used for operations that require a connection....Code:...[WebGet] public IQueryabl...

Using Entity Framework, call another WCF Data Service from a WCF RIA Service.

I would like to use WCF RIA Services to access data from my Silverlight Application. However the data is not provided from a local data storage, but from another WCF Data Service (I'm accessing an external CRM system). I don't want to access the external ...

Request error with WCF Data Services

Its my first time setting up an OData Service and I'm of course having some problems......The problem is that I can't get the service running, I keep getting an "Request Error". ...I have ...researched... on what the problem can be and I found that a comm...

An existing connection was forcibly closed by the remote host - WCF Data Service error

I'm currently using WCF Data Services (well, ADO.Net Data Services) with Entity Framework and am getting the following error when performing a POST (omitted / changed some irrelevant info):...<?xml version="1.0" encoding="utf-8"?><m:error xmlns:m="http://...

Upgraded to EF 6 (RTM) - Getting System.Data.Entity.Core.Objects.ObjectContext cannot be used for return type System.Data.Objects

Just upgraded a .NET 4.5 WCF Service, which also has an OData service to use EF 6. The OData service was of course working prior to the upgrade. Now, when attempting to query the OData service or even just browse to it from Visual Studio 2012, I get the...

WCF Data Service 5.6 with Entity Framework 6.0 Complex Types

I followed the post here to set up my WCF Data Service with Entity Framework 6.0: ...http://blogs.msdn.com/b/astoriateam/archive/2013/10/02/using-wcf-data-services-5-6-0-with-entity-framework-6.aspx...After converting the DataService to EntityFrameworkDat...

Sequence contains no matching element - EntityFramework

I'm using EF 6.1.0 and was creating a WCF Service....First I created a Class Library containing my entities, Mappers and Context for initializing EF. I've also created a class containing an instantiation of the context and have this code:...public IQuerya...

WCF OData Service stored procedure call generates "Operation could destabilize the runtime" error with $select option

I've been trying to call a stored procedure through Entity Framework and WCF Data Services (OData). It returns an entity not a complex type. Following walkthroughs found all over the web (like this ...one...), I came up with this code inside my service:..