Book Image

Entity Framework Tutorial (Update) - Second Edition

By : Joydip Kanjilal
Book Image

Entity Framework Tutorial (Update) - Second Edition

By: Joydip Kanjilal

Overview of this book

The ADO.NET Entity Framework from Microsoft is a new ADO.NET development framework that provides a level of abstraction for data access strategies and solves the impedance mismatch issues that exist between different data models This book explores Microsoft’s Entity Framework and explains how it can used to build enterprise level applications. It will also teach you how you can work with RESTful Services and Google’s Protocol Buffers with Entity Framework and WCF. You will explore how to use Entity Framework with ASP.NET Web API and also how to consume the data exposed by Entity Framework from client applications of varying types, i.e., ASP.NET MVC, WPF and Silverlight. You will familiarize yourself with the new features and improvements introduced in Entity Framework including enhanced POCO support, template-based code generation, tooling consolidation and connection resiliency. By the end of the book, you will be able to successfully extend the new functionalities of Entity framework into your project.
Table of Contents (16 chapters)
Entity Framework Tutorial Second Edition
About the Author
About the Reviewers

Executing stored procedures using the EDM

Let's now discuss how we can use the entity client to insert the Department data. To do this, follow these simple steps:

  1. Create an instance of the EntityConnection class as follows:

        EntityConnection conn = new EntityConnection ("Name=PayrollContainer");
  2. Open the connection by using the EntityConnection instance:

  3. Create an EntityCommand instance and specify the CommandText and CommandType properties:

        EntityCommand cmd = conn.CreateCommand();
        cmd.CommandText = "PayrollEntities.Insert_Department";
        cmd.CommandType = CommandType.StoredProcedure;
  4. Add parameters using the AddWithValue method of the Parameters collection of the EntityCommand instance:

       ("DepartmentName", "Finance");
  5. Next, execute the procedure by using the ExecuteNonQuery method:


Here is the complete code listing:

using (EntityConnection conn = new EntityConnection("Name= PayrollContainer "))