How to update many to many relationship in entity framework

vishal pawar

Hi,

I have many to many relationship between students and courses as below.

I want to update the courses for given student(ex student Id 10 has selected two courses having Id 2 and 6 .Now I want to delete course Id 6 for student id 10 and add new course id ,say 3 ).

I am using code first approach with Entity framework 6 in MVC4.

Can anyone help to solve this issue.?

6 Replies

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Mageshwaran R6y ago
Hi,
Please refer the below link, it might helps you
https://www.codeproject.com/Tips/893609/CRUD-Many-to-Many-Entity-Framework
Packiaraj Santhiyagu8y ago
Hi,

This link will helps you,

https://www.codeproject.com/Tips/893609/CRUD-Many-to-Many-Entity-Framework.
Hemant Jindal8y ago
Hi Vishal

Please refer this link https://www.thereformedprogrammer.net/updating-many-to-many-relationships-in-entity-framework-core/

hope this help you

thanks
Hemant Jindal
Naresh Singhal8y ago
Hi Vishal,

Reference to your reply, go through below links, i think it's what you need exactly.

https://www.codeproject.com/Tips/893609/CRUD-Many-to-Many-Entity-Framework.

http://www.entityframeworktutorial.net/EntityFramework4.3/update-many-to-many-entity-using-dbcontext.aspx

Though i can help you personally but unfortunately i don't have your code . still you should

try with the help of above links, i am damn sure it will bring you to the solution.
vishal pawar8y ago
Hi Naresh,
Thanks for your reply. but I am looking for "Many-to -Many" update.
In the link given by you, its about one to-many .

If you can give solution for many- to many update,Kindly help.
Naresh Singhal8y ago
Hi Vishal,

Kindly go through below link, its all about Code First Approach with EF.

Hope you may get your solution from below link.

https://www.codeproject.com/Tips/869986/CRUD-operation-with-Entity-Framework-Code-First