Update list values after update root class object

Question

I have the following classes:

public class Class_A
{
    public string my_field { get; set; }
    public int id { get; set; } 
    // etc...
}

public class Class_B
{
    public string my_field { get; set; }
    public Class_A field_A { get; set; } 
    // etc...
}

public class Class_C
{
    public string my_field { get; set; }
    public Class_A field_A { get; set; } 
    // etc...
}

List<Class_A> list_A = new List<Class_A>(); //and then populate it
List<Class_B> list_B = new List<Class_B>(); //and then populate it
List<Class_C> list_C = new List<Class_C>(); //and then populate it

And then, when I update some element of list_A, for example

Class_A old_a, new_a;
old_a = list_A.Where("some condition").FirstOrDefault();
new_a = new Class_A();//and then initialize it
list_A[list_A.FindIndex(x => x.Equals(old_a))] = new_a;

I need, that all elements of list_B and list_C, which field Class_A equals old_a will be update to new_a.

1. What is the best way to do this? Now I have following variant, but I think, that it's could be better:

list_B.Where(x => x.Class_A.Equals(old_a)).ForEach(x => x.Class_A = new_a);

2. What is the best way to update all values, if I'll have this code?

public class Class_D
{
    public string my_field { get; set; }
    public List<Class_A> list_A { get; set; } 
    // etc...
}

List<Class_D> list_D = new List<Class_D>(); //and then populate it

score 1 · Accepted Answer · answered Aug 04 '18 at 08:28

1

Have a look at ObservableCollection and Item PropertyChanged

You can make from your list_A an observable collection when can be received by Class_B and Class_C.

answered Aug 04 '18 at 08:28

Aldert

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18

Thank's for your reply. I'll try to use it. – Vlad i Slav Aug 04 '18 at 08:32

Update list values after update root class object

1 Answers1