?
Solved

Entity Framework and SaveChanges

Posted on 2010-09-04
1
Medium Priority
?
896 Views
Last Modified: 2012-06-27
Hi,

I am new to the entity framework and have a question, which maybe silly.

public static BlogSeries BLogSeries_Save( BlogSeries source )
        {
            using ( var ctx = new BlogEngineEntities() )
            {
                ctx.BlogSeriesSet.AddObject( source );
                ctx.SaveChanges();
            }
            // What do i do to return the saved source object???
        }

Open in new window


I am trying to create an n-tier application and therefore i am doing some crud operations and what not. I need to return the changed entity after this save operation as this is important as a few things have identity columns and timestamps and what not that are populated by the SQL Server when the item is updated.

My Question therefore is:
After the SaveChanges is run, what do i need to do to return the source object that has now been saved.

0
Comment
Question by:cossy74
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 63

Accepted Solution

by:
Fernando Soto earned 2000 total points
ID: 33603202
Hi cossy74;

When you save the changes to the database the local cash of the data gets updated automatically so seeming you have a reference to the record outside the using block all you need to do is return it back. See code snippet.

Fernando
public static BlogSeries BLogSeries_Save( BlogSeries source )
{
    using ( var ctx = new BlogEngineEntities() )
    {
        ctx.BlogSeriesSet.AddObject( source );
        ctx.SaveChanges();
    }
    // What do i do to return the saved source object???
    return source;
}

Open in new window

0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB. To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…
Suggested Courses

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question