本文整理汇总了C#中System.Windows.Data.PagedCollectionView.DeferRefresh方法的典型用法代码示例。如果您正苦于以下问题：C# PagedCollectionView.DeferRefresh方法的具体用法？C# PagedCollectionView.DeferRefresh怎么用？C# PagedCollectionView.DeferRefresh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System.Windows.Data.PagedCollectionView的用法示例。
在下文中一共展示了PagedCollectionView.DeferRefresh方法的2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: CountTestWithNoItems
public void CountTestWithNoItems()
{
List<int> intList = new List<int>();
PagedCollectionView pcv = new PagedCollectionView(intList);
Assert.AreEqual(0, pcv.Count);
// update the PageSize and verify that we still have a Count of 0.
pcv.PageSize = 10;
Assert.AreEqual(0, pcv.Count);
// update the PageSize during a DeferRefresh and verify that we still have a Count of 0.
pcv.PageSize = 0;
using (pcv.DeferRefresh())
{
pcv.PageSize = 10;
pcv.MoveToPage(1);
}
Assert.AreEqual(0, pcv.Count);
// now try those same tests above with grouping
pcv.GroupDescriptions.Add(new PropertyGroupDescription(""));
pcv.PageSize = 0;
Assert.AreEqual(0, pcv.Count);
// update the PageSize and verify that we still have a Count of 0.
pcv.PageSize = 10;
Assert.AreEqual(0, pcv.Count);
// update the PageSize during a DeferRefresh and verify that we still have a Count of 0.
pcv.PageSize = 0;
using(pcv.DeferRefresh())
{
pcv.PageSize = 5;
}
Assert.AreEqual(0, pcv.Count);
}示例2: CannotDeferRefresh
public void CannotDeferRefresh()
{
ObservableCollection<TestClass> collection = new ObservableCollection<TestClass>() { new TestClass() };
PagedCollectionView pcv = new PagedCollectionView(collection);
// show that we will throw an exception if we try to change the PageSize while adding
pcv.AddNew();
PagedCollectionViewTest.AssertExpectedException(
new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, PagedCollectionViewResources.OperationNotAllowedDuringAddOrEdit, "DeferRefresh")),
delegate
{
pcv.DeferRefresh();
});
pcv.CancelNew();
// show that we will throw an exception if we try to change the PageSize while editing
pcv.EditItem(pcv[0]);
PagedCollectionViewTest.AssertExpectedException(
new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, PagedCollectionViewResources.OperationNotAllowedDuringAddOrEdit, "DeferRefresh")),
delegate
{
pcv.DeferRefresh();
});
}