Set ObjectDataProvider to be Property of the View
I am using the MVP pattern for my WPF application. I would like to set the ObjectDataProvider to be the Presenter object that I setting in the constructor of my View. I then would like to bind to my controls to properties of the Presenter.
I have defined my ObjectDataProvider like this:
<Window.Resources>
<ObjectDataProvider x:Key="pres" ObjectType="{x:Typ开发者_高级运维e local:MyPresenter}"/>
</Window.Resources>
<Grid DataContext="{Binding pres}" >
<ComboBox Name="_fileTypes" SelectedValuePath="Key" DisplayMemberPath="Value"
ItemsSource="{Binding Path=FileType}"/>
</Grid>
and
public partial class MyView : Window
{
public ViewPresenter MyPresenter { get; set; }
public Dictionary<int, string> FileNames { get; private set; }
public MyView()
{
InitializeComponent();
this.ViewPresenter = new MyPresenter(this, (IService)ObjectFactory.GetInstance<IService>());
this.FileType = GetFileTypes();
}
}
Unfortunately the ObjectDataProvider does not seem to be set correctly, my ComboBox is empty and when I inspect this.Resources["pres"] I get:
{System.Windows.Data.ObjectDataProvider}
base {System.Windows.Data.DataSourceProvider}: {System.Windows.Data.ObjectDataProvider}
ConstructorParameters: Count = 0
IsAsynchronous: false
MethodName: null
MethodParameters: Count = 0
ObjectInstance: null
ObjectType: {Name = "MyPresenter" FullName = "Test.Presenters.MyPresenter"}
How should I correctly define my ObjectDataProvider to use the MyPresenter property of my View?
I normally set the view's data context.
publiv MyView() { this.DataContext = new Model(); }
class Model { public int SomeProperty{get;set;} }
This would then allow you to bind to properties on the model like this;
In order to bind to a resource, you need to use the following syntax:
<Grid DataContext="{Binding {StaticResource Presenter}}" />
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