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The Entity Framework together with LINQ to Entities are very powerful technologies to access and manipulate data from a database. But when you need to gain performance or need extra security, stored procedures and user defined functions are often required. In this first article in a series of three I will focus on how to use stored procedures in the Entity Framework 4.0.
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2010-08-30 - English - .NET, Entity Framework, Database
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LINQPad was introduced in 2007 and nowadays it is a very mature tool which should be in the toolbox of every .NET developer. Version 1.35 offers new connection providers and it has native support for LINQ to SQL and the ADO.NET Entity Framework data models. It also provides new query types like SQL and Entity-SQL. In this small article I will highlight some of the new features. more
2009-04-14 - English - .NET, LINQPad, LINQ, Entity Framework
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A common problem when developing Silverlight applications is how to share classes and in particular (Entity Framework) entities which are compiled for the full .NET framework in a Silverlight application. Silverlight is a browser plugin and a subset of the full .NET framework. Therefore Visual Studio does not allow referencing .NET assemblies from your Silverlight application. In this article I will demonstrate a very simple technique to share source code and it will give several real world examples and some handy tips. more
2009-01-27 - English - .NET, Silverlight, Entity Framework, WCF
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In addition to my article about querying the metadata of the ADO.NET Entity Framework I have implemented several extension methods that utilize this metadata. This article will describe a set of extension methods which can be used to extend the standard Entity Framework classes (ObjectQuery, EntityObject, ObjectStateManager, ...). more
2009-01-12 - English - .NET, Entity Framework
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A few months ago I posted several articles about the ADO.NET Entity Framework beta 3. In the meanwhile the Entity Framework has been officially released and a lot of resources about this technology have become available. In the last few weeks I have been taking a closer look at the metadata services. This article will demonstrate 20 examples which use LINQ to query the metadata collections of the ADO.NET Entity Framework. These queries can be used to examine the structure of your Entity Data Model or to get statistics about it. more
2008-12-02 - English - .NET, Entity Framework
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A few months ago I published an article about my LINQ AsHierarchy extension method. This extension method can be used to convert a flat collection of records to a hierarchical structure of nested collections. I got a lot of enthusiastic responses and questions so I decided to improve this technique a little further. This new article will describe the new features and demonstrates how to use the LINQ to Objects and the new LINQ to SQL AsHierarchy extension methods. more
2008-08-25 - English - .NET, LINQ, Entity Framework, LINQ to SQL
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This article explains how to convert data from a self referencing table (adjacency model) to a hierarchy of nested collections (nested set model). The new LINQ AsHierarchy() extension method can be used to convert data and bind it to WPF TreeViews. more
2008-03-29 - English - .NET, LINQ, Entity Framework, LINQ to SQL
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In this third part of my series of articles about the ADO.NET Entity Framework I will demonstrate how to add and modify data, use change tracking and handle concurrency conflicts. I have also implemented a Dump() extension method which can be useful for displaying all change tracking information. more
2008-02-25 - English - .NET, Entity Framework
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Second part of my series of articles about the ADO.NET Entity Framework. This article covers a few handy testing and learning tools like eSqlBlast and LINQPad. It also describes a few techniques on how to view the generated T-SQL statements when executing Entity SQL or LINQ to Entities queries. more
2008-02-06 - English - .NET, Entity Framework, LINQPad
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A few weeks ago Microsoft released Beta 3 of the ADO.NET Entity Framework (EF). The Entity Framework looks like an interesting technology which is more powerful and advanced than LINQ to SQL. I have created a small tutorial on how to start with the Entity Framework using the Northwind sample database. This first article covers the Entity Data Model (EDM), Entity SQL and LINQ to Entities. I will try to compare EF to LINQ to SQL if possible. more
2008-01-28 - English - .NET, Entity Framework
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