How to remove child one to many related records in EF code first database?

Question

Well, I have one-to-many related model:

public class Parent
{
    public int Id { get; set; }
    public string Name { get; set; }
    public ICollection<         


        

Answer 1

Cascading delete has no effect here because you don't delete the parent but just call InsertOrUpdate. The correct procedure is to delete the children one-by-one, like so for example:

using (var context = new MyContext())
{
    var parent = context.Parents.Include(p => p.Children)
        .SingleOrDefault(p => p.Id == parentId);

    foreach (var child in parent.Children.ToList())
        context.Children.Remove(child);

    context.SaveChanges();
}