One-way binding

Question

I know this question exists but I can't find the solution in the answers.

I have a form with a data-binding to a custom class so that when changing the form, the custom class gets notified (the inverse will never happen).

myForm.DataBindings.Add("Items", ItemsController.Singleton, "Items", false, DataSourceUpdateMode.OnPropertyChanged);

What is happening now is that when I create an instance of the form and set the Items property with some values, the data-binding checks for the ItemsController Items property and updates it back to the form with 0 Items, I want to prevent that using a one-way data-binding.

Is it possible or I will have to rely on event's only?

In DataBinding "OneWay" mean update direction only from DataSource to Form control. — Fabio
– Fabio, Commented Aug 24, 2016 at 17:46
Why you cannot set the items to the custom class Items property, then it is works. And remember to implements INotifyPropertyChanged interface in your Custom class — Fabio
– Fabio, Commented Aug 24, 2016 at 17:48
Let me see. You want setting the form Items property to update the ItemsController, but not the opposite? — Ivan Stoev
– Ivan Stoev, Commented Aug 24, 2016 at 17:52
@Fabio that's one option, but since I used a Factory pattern to create the Form I wanted the factory to handle the binding between the two (thank you for trying to help, I just want to learn and I don't understand the downvotes :/) — miguelmpn
– miguelmpn, Commented Aug 25, 2016 at 0:04

Ivan Stoev · Accepted Answer · 2016-08-25 07:23:07Z

Looks like you are seeking for Binding.ControlUpdateMode property:

Gets or sets when changes to the data source are propagated to the bound control property

myForm.DataBindings.Add(new Binding("Items", ItemsController.Singleton, "Items") { DataSourceUpdateMode = DataSourceUpdateMode.OnPropertyChanged, ControlUpdateMode = ControlUpdateMode.Never });

Collectives™ on Stack Overflow

One-way binding

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related