All is in the title, I want to do something like :
<ListBox AssignTo="{Binding ListBoxControl}" ... Then in my ViewModel having a property like this :
public ListBox CurrentListBox { get; set; } What I want is to easely retrieve the selected items
Could I do that?
your xaml should looks like
<ListBox ItemsSource="{Binding List}" SelectedItem="{Binding Item}"/> and your properties should looks something like
private List<yourClass> list; public List<yourClass> List { get { return list; } set { list = value; RaisPropertyChanged("List"); } } private yourClass item; public yourClass Item { get { return item; } set { item = value; RaisPropertyChanged("Item"); } } now you only need to set your ViewModle as DataContext and there are many many way's to do this
i'm use a very simple way to do this i create an ResourceDictionary (VMViews.xaml)
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:vm="clr-namespace:ProjectName.namespace" xmlns:vw="clr-namespace:ProjectName.namespace" > <DataTemplate DataType="{x:Type vm:YourVMName}"> <vw:YourVName/> </DataTemplate> </ResourceDictionary> and in my App.xaml
<Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="/Path/VMViews.xaml"/> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources> (this code isn't tested)
XAML
<ListBox ItemsSource="{Binding List}" SelectedItem="{Binding Item}" SelectionChanged="ListBox_SelectionChanged"> <ListBox.Resources> <Style TargetType="{x:Type ListBoxItem}"> <Setter Property="IsSelected" Value="{Binding IsSelected}" /> </Style> </ListBox.Resources> </ListBox> now your the yourClass need to implement the IsSelected property
than you can do something like
private yourClass item; public yourClass Item { get { return item; } set { item = value; RaisPropertyChanged("Item"); SelectedItems = List.Where(listItem => listItem.IsSelected).ToList(); } } private List<yourClass> selectedItems; public List<yourClass> SelectedItems { get { return selectedItems; } set { selectedItems = value; RaisPropertyChanged("SelectedItems"); } } 
SelectedItems="{Binding SelectedTest}" SelectionMode="Extended"/>Multiple is such a pain?
Another person had similar issues while trying to learn...
Take a look at this answer to help
Your property is exposed via public getter/setter (although setter can be private to your data context object).
Then, the property of the listbox "Items" will get "bound" to your exposed property.
ListBox. Your VM should only expose Model related properties which you can bind to your View, from what I understand.ListBoxControland then don't defineListBoxControlanywhere. If you meant to bind toCurrentListBoxthen most likely what you want to do is use aContentControlinstead:<ConentControl Content="{Binding CurrentListBox}" />, but I'd recommend against it.