Wrox Programmer Forums

Need to download code?

View our list of code downloads.

| FAQ | Members List | Search | Today's Posts | Mark Forums Read
BOOK: Beginning ASP.NET 4 : in C# and VB
This is the forum to discuss the Wrox book Beginning ASP.NET 4: in C# and VB by Imar Spaanjaars; ISBN: 9780470502211
Welcome to the p2p.wrox.com Forums.

You are currently viewing the BOOK: Beginning ASP.NET 4 : in C# and VB section of the Wrox Programmer to Programmer discussions. This is a community of tens of thousands of software programmers and website developers including Wrox book authors and readers. As a guest, you can read any forum posting. By joining today you can post your own programming questions, respond to other developers’ questions, and eliminate the ads that are displayed to guests. Registration is fast, simple and absolutely free .
DRM-free e-books 300x50
Reply
 
Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old December 11th, 2010, 05:05 PM
Authorized User
Points: 322, Level: 6
Points: 322, Level: 6 Points: 322, Level: 6 Points: 322, Level: 6
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Nov 2010
Posts: 63
Thanks: 3
Thanked 0 Times in 0 Posts
Default Code on page 562

Hello
I don't understand the following line of code:
myEntities.AddToReviews(myReview)
Could somebody explain?
Thanks
Alex
Reply With Quote
  #2 (permalink)  
Old December 11th, 2010, 07:18 PM
Imar's Avatar
Wrox Author
Points: 72,073, Level: 100
Points: 72,073, Level: 100 Points: 72,073, Level: 100 Points: 72,073, Level: 100
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Jun 2003
Location: Utrecht, Netherlands.
Posts: 17,089
Thanks: 80
Thanked 1,587 Times in 1,563 Posts
Default

Hi there,

This code adds an instance of a Review (the myReview variable) to the Reviews collection of the Entity Framework context object (myEntities) using the AddToReviews method.

After this line of code, the instance is available for querying (for example, using myEntities.Reviews) and if you call SaveChanges, it's persisted to the database as well.

Hope this clarifies things.

Cheers,

Imar
__________________
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Follow me on Twitter

Author of Beginning ASP.NET 4.5 : in C# and VB, Beginning ASP.NET Web Pages with WebMatrix
and Beginning ASP.NET 4 : in C# and VB.
Did this post help you? Click the button below this post to show your appreciation!
Reply With Quote
  #3 (permalink)  
Old December 11th, 2010, 07:32 PM
Authorized User
Points: 322, Level: 6
Points: 322, Level: 6 Points: 322, Level: 6 Points: 322, Level: 6
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Nov 2010
Posts: 63
Thanks: 3
Thanked 0 Times in 0 Posts
Default

Thanks Imari
How is the AddToReviews method created? Automatically by the framework? If I have a table called "example", is there automatically a method AddToExamples created?
Thanks
Alex
Reply With Quote
  #4 (permalink)  
Old December 12th, 2010, 06:43 AM
Imar's Avatar
Wrox Author
Points: 72,073, Level: 100
Points: 72,073, Level: 100 Points: 72,073, Level: 100 Points: 72,073, Level: 100
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Jun 2003
Location: Utrecht, Netherlands.
Posts: 17,089
Thanks: 80
Thanked 1,587 Times in 1,563 Posts
Default

Hi Alex,

The best answer to that question is: why don't you try it out. Simply drag your examples table on the design surface of the EF designer as explained in the book. Then save your changes, create a new instance of the EF context and see if the method is there.

The second best answer is: yes, the method is created automatically, depending on the actual object and set name. If you make sure the class ends up as Example, and the set name as Examples, you should end up with an AddToExamples method.

Cheers,

Imar
__________________
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Follow me on Twitter

Author of Beginning ASP.NET 4.5 : in C# and VB, Beginning ASP.NET Web Pages with WebMatrix
and Beginning ASP.NET 4 : in C# and VB.
Did this post help you? Click the button below this post to show your appreciation!
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Code to save html page source code? Jaymond Flurrie Access VBA 2 July 2nd, 2019 06:04 PM
Chap 16 pg 562 MyProfile does see web.config tomche BOOK: Beginning ASP.NET 3.5 : in C# and VB BOOK ISBN: 978-0-470-18759-3 7 July 28th, 2009 10:47 AM
Master Page Method: Code-Behind for Content Page kwilliams ASP.NET 2.0 Professional 3 June 2nd, 2008 12:57 PM
building blocks (page 562) terry s Dreamweaver (all versions) 1 January 13th, 2005 02:10 PM



All times are GMT -4. The time now is 01:15 AM.


Powered by vBulletin®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
© 2013 John Wiley & Sons, Inc.