Question

I have a list with objects that have all a property: IsSelected. Now I try to automatically select the items in a GridView if the property is true.

I tried to override PrepareContainerForItemOverride in the GridView and set a binding to the objects with no success. Any ideas?

protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
    base.PrepareContainerForItemOverride(element, item);

    var listItem = element as GridViewItem;
    var binding = new Binding 
    {
        Mode = BindingMode.TwoWay, 
        Source = item, 
        Path = new PropertyPath("Selected")
    };
    if (listItem != null) 
        listItem.SetBinding(SelectorItem.IsSelectedProperty, binding);
}

Answer 1

I was so close. I just have to set:

protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
    base.PrepareContainerForItemOverride(element, item);

    var listItem = element as GridViewItem;
    listItem.IsSelected = true;
}

..to select all Items.