XAML / C＃中来自WinJS模拟的模板渲染器

Question

In WinJS application itemTemplate property of listview can accept a function in which i can create elements manually.

What is the analog for this approach in XAML/C# applications?

I know about DataTemplate selectors, but I need to create items manually, I want rid off templates because of performance.

Answer 1

Have you seen DataTemplateSelector? http://code.msdn.microsoft.com/windowsapps/The-DataTemplateSelector-93e46ad7

Answer 2

I think you can make a CustomControl inheriting from ItemsControl.

   public class BuildingComparer : ItemsControl
      {} 

There, you will find some methods to override:

 protected override DependencyObject GetContainerForItemOverride()
    {
        var container = new ContentPresenter();           
        //Do Stuff
        return container;            
    }

And you have access to the Items property so you can paint the elements whenever the SizeChanged event occurs, you can call to a Method wich manually paints all the elements.

Hope it helps you.

Answer 3

To accomplish this in C# / XAML, you need to bind the ItemsControl's ItemsSource property to a property that creates the items for you.

Example XAML:

<ItemsControl ItemsSource="{Binding SourceProperty}" />

Example DataContext:

public IEnumerable SourceProperty
{
    get
    {
        yield return new TextBlock(new Run("First"));
        yield return new TextBlock(new Run("Second"));
        yield return new TextBlock(new Run("Third"));
    }
}

Edit: If you absolutely must avoid all databinding (I'm not sure why you would), you can assign the ItemsSource in the codebehind:

Updated XAML:

<ItemsControl Name="MyItemsControl" />

Code behind:

public MainWindow()
{
    InitializeComponent();

    MyItemsControl.ItemsSource = SourceProperty;
}