What is navigation property in entity framework? [Resolved]

Posted by Kumarkrishna184 under ASP.NET MVC on 12/15/2015 | Points: 10 | Views : 659 | Status : [Member] | Replies : 4
What is navigation property in entity framework?

Thanks and Regards,
Krishna Kumar



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Posted by: Rajnilari2015 on: 12/15/2015 [Member] [Microsoft_MVP] [MVP] Platinum | Points: 50

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In the case of a RDMBS we have various kinds of relationships among the entities like

- One to One
- One to Many
- Many to Many.

We create those relations among the tables via PK and FK . These key's becomes the navigational keys for the tables to establish the relationships among themselves. (you can refer to an answer given by me in DNF forum about that http://www.dotnetfunda.com/forums/show/20876/database-management-system ).

In a similar way, in EF, a navigation property allows to navigate from one entity to another entity. A few day's back I have given answer to one of your question in DNF ( http://www.dotnetfunda.com/forums/show/20879/what-is-code-first-migrations-in-mvc-and-what-is-procedure-to-do-code ).

In that example , the below line of code does the navigation

modelBuilder.Entity<Department>().HasRequired(d => d.Department).WithMany().HasForeignKey(e => e.EmpID);


For more info: https://msdn.microsoft.com/en-us/library/bb738520.aspx

Hope this helps.

--
Thanks & Regards,
RNA Team

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Posted by: Webmaster on: 12/15/2015 [Administrator] HonoraryPlatinum | Points: 50

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Dear Kumarkrishna184,

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Posted by: Kumarkrishna184 on: 12/15/2015 [Member] Starter | Points: 25

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Wow Sir, Your way of explaining is very simple that' s reason i am able to understand very easily.Thanks sir......

Thanks and Regards,
Krishna Kumar

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Posted by: Kumarkrishna184 on: 12/15/2015 [Member] Starter | Points: 25

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Sorry Sir asking to you a personal question,Have you got your dotnetfunda.com Prize. I have also won the dotnetfunda.com jquery material prize. But till i did not get the prize. Sir, What is procedure to get the prize after winning? Before 4-5 days, I have submited the form after winning the prize.

Thanks and Regards,
Krishna Kumar

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