本文整理汇总了C#中Microsoft.Phone.Controls.LongListSelector.UpdateLayout方法的典型用法代码示例。如果您正苦于以下问题：C# LongListSelector.UpdateLayout方法的具体用法？C# LongListSelector.UpdateLayout怎么用？C# LongListSelector.UpdateLayout使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Microsoft.Phone.Controls.LongListSelector的用法示例。
在下文中一共展示了LongListSelector.UpdateLayout方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetItemsInViewPort
/// <summary>
/// Gets the items that are currently in the viewport
/// of a LongListSelector and adds them
/// into a list of weak references.
/// </summary>
/// <param name="list">
/// The LongListSelector instance to search on.
/// </param>
/// <param name="items">
/// The list of weak references where the items in
/// the viewport will be added.
/// </param>
public static void GetItemsInViewPort(LongListSelector list, IList<WeakReference> items)
{
DependencyObject child = list;
if (VisualTreeHelper.GetChildrenCount(list) == 0)
{
// no child yet
return;
}
list.UpdateLayout();
do
{
child = VisualTreeHelper.GetChild(child, 0);
} while (VisualTreeHelper.GetChildrenCount(child) > 0 && !(child is Canvas));
if (child is Canvas &&
VisualTreeHelper.GetChildrenCount(child) > 0 &&
VisualTreeHelper.GetChild(child, 0) is Canvas)
{
Canvas headersPanel = (Canvas)child;
Canvas itemsPanel = (Canvas)VisualTreeHelper.GetChild(child, 0);
var itemsInList = new List<KeyValuePair<double, FrameworkElement>>();
AddVisibileContainers(list, itemsPanel, itemsInList, /* selectContent = */ false);
AddVisibileContainers(list, headersPanel, itemsInList, /* selectContent = */ true);
foreach (var pair in itemsInList.OrderBy(selector => selector.Key))
{
items.Add(new WeakReference(pair.Value));
}
}
}