本文整理汇总了C#中ICollectionView.DeferRefresh方法的典型用法代码示例。如果您正苦于以下问题：C# ICollectionView.DeferRefresh方法的具体用法？C# ICollectionView.DeferRefresh怎么用？C# ICollectionView.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ICollectionView的用法示例。
在下文中一共展示了ICollectionView.DeferRefresh方法的5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: SortViewModel
public SortViewModel(ICollectionView source, SortData[] columns, IEnumerable<SortDescription> existing = null,
SortData[] requiredColumns = null) {
View = source;
Columns = columns;
_requiredColumns = requiredColumns ?? new SortData[0];
if (existing != null) {
var d = View.DeferRefresh();
SortDescriptions.Clear();
foreach (var c in _requiredColumns)
SortDescriptions.Add(c.ToSortDescription());
var item = existing
.FirstOrDefault(x => Columns.Select(y => y.Value).Contains(x.PropertyName));
if (item != default(SortDescription)) {
SelectedSort = Columns.First(x => x.Value == item.PropertyName);
SelectedSort.SortDirection = item.Direction;
SortDescriptions.Add(item);
}
d.Dispose();
} else {
var item = SortDescriptions.FirstOrDefault(x => Columns.Select(y => y.Value).Contains(x.PropertyName));
if (item != default(SortDescription)) {
SelectedSort = Columns.First(x => x.Value == item.PropertyName);
SelectedSort.SortDirection = item.Direction;
}
}
OldSelectedSort = SelectedSort;
this.WhenAnyValue(x => x.SelectedSort)
.Skip(1)
.Subscribe(x => SortColumn());
this.SetCommand(x => x.SortCommand).Subscribe(x => SortColumn());
this.SetCommand(x => x.ToggleVisibilityCommand).Subscribe(x => ToggleVisibility());
}示例2: Sort
private static ICollectionView Sort( ICollectionView view, string propertyName, ListSortDirection direction, bool append )
{
Contract.Requires( view != null, "view" );
Contract.Requires( !string.IsNullOrEmpty( propertyName ), "propertyName" );
Contract.Ensures( Contract.Result<ICollectionView>() != null );
using ( var defer = view.DeferRefresh() )
{
if ( !append )
view.SortDescriptions.Clear();
view.SortDescriptions.Add( new SortDescription( propertyName, direction ) );
}
return view;
}示例3: ApplyPropertiesToView
// Forward properties from the CollectionViewSource to the CollectionView
void ApplyPropertiesToView(ICollectionView view)
{
if (view == null || _deferLevel > 0)
return;
ICollectionViewLiveShaping liveView = view as ICollectionViewLiveShaping;
using (view.DeferRefresh())
{
int i, n;
// Culture
if (Culture != null)
{
view.Culture = Culture;
}
// Sort
if (view.CanSort)
{
view.SortDescriptions.Clear();
for (i=0, n=SortDescriptions.Count; i < n; ++i)
{
view.SortDescriptions.Add(SortDescriptions[i]);
}
}
else if (SortDescriptions.Count > 0)
throw new InvalidOperationException(SR.Get(SRID.CannotSortView, view));
// Filter
Predicate<object> filter;
if (FilterHandlersField.GetValue(this) != null)
{
filter = FilterWrapper;
}
else
{
filter = null;
}
if (view.CanFilter)
{
view.Filter = filter;
}
else if (filter != null)
throw new InvalidOperationException(SR.Get(SRID.CannotFilterView, view));
// GroupBy
if (view.CanGroup)
{
view.GroupDescriptions.Clear();
for (i=0, n=GroupDescriptions.Count; i < n; ++i)
{
view.GroupDescriptions.Add(GroupDescriptions[i]);
}
}
else if (GroupDescriptions.Count > 0)
throw new InvalidOperationException(SR.Get(SRID.CannotGroupView, view));
// Live shaping
if (liveView != null)
{
ObservableCollection<string> properties;
// sorting
if (liveView.CanChangeLiveSorting)
{
liveView.IsLiveSorting = IsLiveSortingRequested;
properties = liveView.LiveSortingProperties;
properties.Clear();
if (IsLiveSortingRequested)
{
foreach (string s in LiveSortingProperties)
{
properties.Add(s);
}
}
}
CanChangeLiveSorting = liveView.CanChangeLiveSorting;
IsLiveSorting = liveView.IsLiveSorting;
// filtering
if (liveView.CanChangeLiveFiltering)
{
liveView.IsLiveFiltering = IsLiveFilteringRequested;
properties = liveView.LiveFilteringProperties;
properties.Clear();
if (IsLiveFilteringRequested)
{
foreach (string s in LiveFilteringProperties)
{
properties.Add(s);
}
}
}
//.........这里部分代码省略.........
示例4: ApplyPropertiesToView
private void ApplyPropertiesToView(ICollectionView view)
{
int num;
int count;
Predicate<object> filterWrapper;
if (view == null || this.deferLevel > 0)
{
return;
}
using (IDisposable disposable = view.DeferRefresh())
{
if (this.Culture != null)
{
view.Culture = this.Culture;
}
if (view.CanSort)
{
view.SortDescriptions.Clear();
num = 0;
count = this.SortDescriptions.Count;
while (num < count)
{
view.SortDescriptions.Add(this.SortDescriptions[num]);
num++;
}
}
else if (this.SortDescriptions.Count > 0)
{
throw new InvalidOperationException("CollectionViewSource CannotShape Sorting");
}
if (this.filterHandlers == null)
{
filterWrapper = null;
}
else
{
filterWrapper = this.FilterWrapper;
}
if (view.CanFilter)
{
view.Filter = filterWrapper;
}
else if (filterWrapper != null)
{
throw new InvalidOperationException("CollectionViewSource CannotShape Filtering");
}
if (view.CanGroup)
{
view.GroupDescriptions.Clear();
num = 0;
count = this.GroupDescriptions.Count;
while (num < count)
{
view.GroupDescriptions.Add(this.GroupDescriptions[num]);
num++;
}
}
else if (this.GroupDescriptions.Count > 0)
{
throw new InvalidOperationException("CollectionViewSource CannotShape Grouping");
}
}
}示例5: ApplyPropertiesToView
// Forward properties from the CollectionViewSource to the CollectionView
void ApplyPropertiesToView(ICollectionView view)
{
if (view == null || _deferLevel > 0)
return;
using (view.DeferRefresh())
{
int i, n;
// Culture
if (Culture != null)
{
view.Culture = Culture;
}
// Sort
if (view.CanSort)
{
view.SortDescriptions.Clear();
for (i=0, n=SortDescriptions.Count; i < n; ++i)
{
view.SortDescriptions.Add(SortDescriptions[i]);
}
}
else if (SortDescriptions.Count > 0)
throw new InvalidOperationException(SR.Get(SRID.CannotSortView, view));
// Filter
Predicate<object> filter;
if (FilterHandlersField.GetValue(this) != null)
{
filter = FilterWrapper;
}
else
{
filter = null;
}
if (view.CanFilter)
{
view.Filter = filter;
}
else if (filter != null)
throw new InvalidOperationException(SR.Get(SRID.CannotFilterView, view));
// GroupBy
if (view.CanGroup)
{
view.GroupDescriptions.Clear();
for (i=0, n=GroupDescriptions.Count; i < n; ++i)
{
view.GroupDescriptions.Add(GroupDescriptions[i]);
}
}
else if (GroupDescriptions.Count > 0)
throw new InvalidOperationException(SR.Get(SRID.CannotGroupView, view));
}
}