C＃在ListView中的WrapGrid（无xaml）

Question

Somebody know how to translate the following xaml code to C#?

<ListView>
     <ListView.ItemsPanel>
          <ItemsPanelTemplate>
                <WrapGrid Orientation="Horizontal" />
          </ItemsPanelTemplate>
     </ListView.ItemsPanel>
</ListView>

Answer 1

I'm not sure why you want to create this in code, it would probably be better to just put the ItemPanelTemplate in a resource in your page or in App.xaml.
Otherwise here how to create it by code:

ItemsPanelTemplate template=new ItemsPanelTemplate();
var str = "<ItemsPanelTemplate xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\">" 
     +"<WrapGrid Orientation=\"Horizontal\" />" 
     +"</ItemsPanelTemplate>";
ItemsPanelTemplate panelTemplate = (ItemsPanelTemplate)Windows.UI.Xaml.Markup.XamlReader.Load(str);

ListView listView=new ListView();    
listView.ItemsPanel = panelTemplate ;

Answer 2

From this link what I conclude is that ItemsPanelTemplate belongs to mainly XAML because you can not alter them from simple run time APIs. So you need to stick to either XAML declaration or you can use XamlReader to load the XAML.

using Windows.UI.Xaml.Markup;

private ListView GetListView()
{

    const string xaml = @"<ListView xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation"">
                             <ListView.ItemsPanel>
                                  <ItemsPanelTemplate>
                                        <WrapGrid Orientation=""Horizontal"" />
                                  </ItemsPanelTemplate>
                             </ListView.ItemsPanel>
                        </ListView>";
    var lv = (ListView)XamlReader.Load(xaml);
    return lv;
}