Ismail Cem Aksoy, PMP

How to change DDL Generation Workflow File

cemaksoy — Mon, 14 May 2012 11:09:24 +0000

You can copy and change default DDL Generation file in this folder :

\Microsoft Visual Studio 10.0\Common7\IDE\Extensions\Microsoft\Entity Framework Tools\DBGen

MetadataWorkspace Dataspace Enums

cemaksoy — Mon, 30 Apr 2012 07:30:34 +0000

If you have MetadataWorkspace object you can use metadata objects using Dataspace enums.

Dataspace enums consist of :

OSpace: Object model.

CSpace: Conceptual model.

SSpace: Storage model.

OCSpace:Mapping between object model and the conceptual model.

CSSpace: Mapping between storage model and the conceptual model.

MultipleActiveResultSets Property in Entity ConnectionString

cemaksoy — Fri, 20 Apr 2012 08:44:47 +0000

Sql server doesn’t support using same connection for multiple query results by default. Using MultipleActiveResultSets (a.k.a MARS) in connectionString enables to use different resultset in same connection.

ADO.NET Data Providers

cemaksoy — Fri, 20 Apr 2012 06:42:07 +0000

An updated list of providers which ADO.Net supports :

http://msdn.microsoft.com/en-us/data/dd363565.aspx

POCO Entities and Lazy Loading

cemaksoy — Thu, 19 Apr 2012 09:01:55 +0000

You can’t define properties whether use LazyLoading or not in ObjectContext level. But using POCO entities allow you to accomplish this. When you using POCO Entities, properties which you want to leverage lazy loading must be defined as ‘virtual’.

What is a graph?

cemaksoy — Wed, 18 Apr 2012 11:40:12 +0000

When different entities which instantiated are connected each other with a relationship, the structure is called as graph or entity graph.

Entity Framework Terminology

cemaksoy — Wed, 18 Apr 2012 10:36:59 +0000

A helpful information about EF terms :

http://msdn.microsoft.com/en-us/library/bb387161.aspx

Self Tracking Entities and Original Values

cemaksoy — Tue, 17 Apr 2012 07:26:08 +0000

Self tracking entities don’t be aware all changed properties. It follows original values only these properties

Entitykey properties
ForeignKey properties
When entity property is set to ConcurrencyMode=Fixed

Self Tracking Entities and Collaboration

cemaksoy — Mon, 16 Apr 2012 15:10:52 +0000

Using self tracking entities with other .Net 4 projects might be efficiently, but when you use different versions of .Net or server side programming languages to consume this web service you might encounter with problems.If you won’t use .Net 4 in your all applications which consume this web service it’s better to use POCO classes to leverage entity state management.

Showing error messages explicitly in WCF Data Services

cemaksoy — Thu, 12 Apr 2012 08:54:51 +0000

It might be hard to see what’s wrong on your WCF Data Service. There is a config setting to show error messages on WCF Data Service explicitly.To do this simply add the following line to ‘InitializeService’ method :

config.UseVerboseErrors = true;

When development step is completed, it should be better to remove from method.