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Category Archives: Entity Framework
Entity Framework 5 easier way to update record
In the past with EF if you wanted to update a record you would need to do something like this: Advertisements
Create a dynamic where clause using Linq
The scenario that came up today was this. A data entry application has the following fields, FirstName, LastName, and EmailAddress.
CS0012: The type ‘System.Data.Spatial.DbGeography’ in Entity Framework and MVC
Last night I was working on a MVC4 project. Utilizing Entity Framework 5’s new DBGeography when adding the field to the MVC view I received the following error:
MVC display an image that is stored as a byte array
So the scenario is; how do we retrieve images that are stored in a database as a byte array and display them on a page utilizing Asp.net MVC. The major hurtle that needs to be overcome is that a … Continue reading
DatabaseGeneratedOption does not Exist error after upgrading to Entity Framework 5.x RC or .NET Framework 4.5
Like so many others over the weekend I upgraded to the last RC builds of various Visual Studio 2012 related products. While updating my Web Api sample project ChlodnyWebApi I ran into one error when upgrading to Entity Framework 5 … Continue reading
Posted in Entity Framework
Tagged Entity Framework
Released Entity Framework Power Tools Beta 2
A few weeks ago I demo’d how to reverse engineer an existing database using the Entity Framework Power tools Beta 1. A few days ago (9th of April) the EF team released an update to that tool setup with some … Continue reading
SWFL .NET Developer User Group Presentation: Entity Framework Code First, Asp.Net Web Api, and HTML/jQuery
For the month of March I was the presenter at the SWFL .NET Developer User group. I am either getting better at this stuff or they are just really loving to be punished. A big shout out and thanks to … Continue reading
Posted in Entity Framework, MVC, Web
Tagged Entity Framework, jQuery, MVC, Presentations
Chlodny series Day 5: Brief: What is ASP.NET Web API?
ASP.NET Web API is the new product born from WCF for jQuery. Web API allows services to be created over HTTP rather then utilizing a service contract (SOAP or WS). Web API creates an avenue for developers to expose data … Continue reading
Posted in Entity Framework, MVC, Web
Tagged C#, Entity Framework, HTML5, MVC, WebApi
Chlodny series Day 4: Entity Framework Code First Migration
Before Entity Framework Code First Migration was introduced in version 4.3. Developers had a few options if the domain model was different from the database schema. CreateDatabaseIfNotExists : Pretty self explanatory, if on application start Entity Framework cannot find the … Continue reading
Posted in Entity Framework, MVC, Web
Tagged C#, Entity Framework, HTML5, MVC, WebApi
Chlodny series Day 3: Connect Web Api to Entity Framework
Now that the existing database has been reversed engineered and the domain classes are set, it is time to wire up those domain classes to the main project. Add the DataAccess project to the ChlodnyWebApi project.
