Get data from parent-child relationship using edmx

Many developers are creating the View in database for tables’ relationship. Revisit Nancy ADO sample in 2010. I do think that it is a good way to loop through the parent-child relationship without creating a view.


The edmx model as below.




The loop is like below.


foreach (Course c in context.Courses)



  foreach (Video v in c.Videos)


     Console.WriteLine(”  “+v.Video_Name);




Download the complete code from The sample file name is ADODemo3.rar. My MSN ID is



POCO Template in ADO.NET Entity Framework

Nancy Strickland’s blog

About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress ( till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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3 Responses to Get data from parent-child relationship using edmx

  1. Pingback: How to pass var as parameter | Chanmingman's Blog

  2. Pingback: Using IEnumerable with LINQ | Chanmingman's Blog

  3. Pingback: Using ObjectQuery with Entity Framework | Chanmingman's Blog

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