Question

In my WPF Caliburn.Micro application, I have a datagrid and a checkbox with a corresponding ModelView bool property. I need to bind the checkbox to one of the datagrid’s fields OneWay (which is easy). But also I want to bind the same checkbox to the property OneWayToSource. Could you please tell me how I can do that? I don’t see how Multibinding can help here.

Thanks.

Answer 1

I don’t know if this is a checkbox per row of the DataGrid, or a checkbox for a row with a particular id or index. Either way, you can use TwoWay binding, which will be the default anyway if your view model property has a getter and setter.

Your view model property should point to the instance of the record that the DataGrid is binding to.

E.g.

View Model

public ObservableCollection<Item> MyGridItems { get; set; }

public MyViewModel()
{
   this.MyGridItems = ...
   this.MySpecialItem = this.MyGridItems[0];
}

public Item MySpecialItem 
{
   get { return this.mySpecialItem; }
   set { this.mySpecialItem = value; // notify of property change here }
}

View

<CheckBox IsChecked="{Binding MySpecialItem.MyBooleanProperty}" />