I just installed CTP of entity framework 4.0 (2.0 technically). I decided to test the most advertized feature – ability to have actual foreign keys (IDs) in addition to navigation properties. The lack of this feature has been the biggest annoyance for me while working with Entity Framework for many months now. Here is the …
As I mentioned before I talked at GGMUG last Thursday. I talked about Entity Framework in general and specifically in N-Tier applications, such as Silverlight applications. I think I got a few folks excited about using Entity Framework. The key thing to remember when using EF in N-Tier applications is that EF keeps track of …
Continue reading ‘Silverlight And N-Tier Data Access using Entity Framework’ »
I will be presenting at the next Gwinnett Georgia Microsoft Users Group this coming Thursday. The topic of my presentation will be Entity Framework in general and its applications to Silverlight development. I will be posting the zip file with slides and sample application immediately after the presentation. I hope to see you there!
Here is a scenario – I have two tables – Users and Phones. Users table has two columns that relate to Phones table – PrimaryPhone and SecondaryPhone. If you build an EF model with these two tables, you will end up with Users entity with two navigation properties that relate to Phones entity – Phones …
Continue reading ‘Entity Framework and multiple relationships between two tables’ »
I have been using Entity framework as DAL for a CSLA for Silverlight based application. I have player a role in uncovering a number of issues that make it very hard to use in these circumstances. Here is my (surely incomplete) list. 1. Foreign keys handling. The actual IDs that are used as foreign keys …
Continue reading ‘Using Entity Framework as Data Access Layer in n-Tier applications’ »
I just read this blog post on ADO.NET team blog. I have been wondering about the future on Linq to SQL since the release of Entity Framework. There is signification overlap in capabilities of both technologies, and one must wonder about the overhead Microsoft is willing to incur in maintaining both. My guess is, they …