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Entity Framework 6 - Knowledge Base (KB)

10 results for: in tag: wcf-data-services

What are the alternatives to using Expand 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...
entity-framework lazy-loading linq wcf-data-services
asked by ChrisHDog

How to force ADO.NET Entity Framework to 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...
entity-framework wcf-data-services
asked by Ken Henderson

The ObjectContext instance has been disposed and can no longer be used for operations 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...
c# entity-framework exception-handling wcf wcf-data-services
asked by Attilah

Call another WCF Data Service from WCF RIA Service using Entity Framework

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 ...
c# entity-framework silverlight wcf-data-services wcf-ria-services
asked by slfan

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...
entity-framework odata wcf-data-services
asked by LazyTarget

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://...
c# entity-framework wcf-data-services
asked by Paul Aldred-Bann

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...
entity-framework odata wcf-data-services
asked by Grandizer

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...
entity-framework-6 wcf-data-services
asked by Henry O

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...
c# ef-code-first entity-framework wcf wcf-data-services
asked by user1960948

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:..
entity-framework-5 entity-framework-6 odata select wcf-data-services
asked by iamnobody

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