Entity Framework 6.12 cascade Delete ( one to many relationship)

Question

0.00/5 (No votes)

See more:

Hi All,

i have two table parent(id p_key,name) and child(addresid,city, id ForeignKey) table have one to many relationship ,

so if i am deleting any recording from parent table then all related record should be deleted from child table

i am using entity framework code first approach

Posted 18-Oct-15 22:45pm

Member 10419297

Add a Solution

Comments

phil.o 19-Oct-15 4:52am

What is the problem? Please describe the issue. And ask a formal question.

Member 10419297 19-Oct-15 8:43am

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<childtable>().HasRequired(m => m.ParentTable).WithMany(m => m.ChildTable).WillCascadeOnDelete(true); //Line1

modelBuilder.Entity<childtable>().HasRequired(m => m.ParentTable).WithMany(m => m.ChildTable).HasForeignKey(m => m.EmailCampaignId).WillCascadeOnDelete(true);//Line2
base.OnModelCreating(modelBuilder);
}
for cascade delete which one i have to use Line1 or Line2 as per my understanding both are doing same thing. is there any difference between Line1 code and Line2 code

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Member 8673372 · Answer 1 · 2015-10-18T23:12:00

Solution 1

http://www.asp.net/mvc/overview/older-versions/getting-started-with-aspnet-mvc4/accessing-your-models-data-from-a-controller

Posted 18-Oct-15 23:12pm

Member 8673372