[英]WPF sorting DataGrid with reset
I have custom sort for my DataGrid我的 DataGrid 有自定义排序
if (sortPropertyName == "Ip")
{
IComparer comparer = null;
e.Handled = true;
ListSortDirection direction = (e.Column.SortDirection != ListSortDirection.Ascending) ? ListSortDirection.Ascending : ListSortDirection.Descending;
e.Column.SortDirection = direction;
ListCollectionView lcv = (ListCollectionView)CollectionViewSource.GetDefaultView(dataGrid.ItemsSource);
comparer = new SortIPAddress(direction);
lcv.CustomSort = comparer;
}
It works well.它运作良好。 And I have method reset sort for other column我有其他列的方法重置排序
if (e.Column.SortDirection.HasValue && e.Column.SortDirection.Value == ListSortDirection.Descending)
{
int index = Helpers.FindSortDescription(dataGrid.Items.SortDescriptions, sortPropertyName);
if (index != -1)
{
e.Column.SortDirection = null;
// remove the sort description
dataGrid.Items.SortDescriptions.RemoveAt(index);
dataGrid.Items.Refresh();
if ((Keyboard.Modifiers & ModifierKeys.Shift) != ModifierKeys.Shift)
{
// clear any other sort descriptions for the multisorting case
dataGrid.Items.SortDescriptions.Clear();
dataGrid.Items.Refresh();
}
// stop the default sort
e.Handled = true;
}
}
How Can I do reset like in column Ip?我怎样才能像 Ip 列那样重置?
I did:我做了:
if (e.Column.SortDirection.HasValue && e.Column.SortDirection.Value == ListSortDirection.Descending)
{
e.Column.SortDirection = null;
}
else
{
ListSortDirection direction = (e.Column.SortDirection != ListSortDirection.Ascending) ? ListSortDirection.Ascending : ListSortDirection.Descending;
e.Column.SortDirection = direction;
comparer = new SortIPAddress(direction);
}
ListCollectionView lcv = (ListCollectionView)CollectionViewSource.GetDefaultView(dataGrid.ItemsSource);
lcv.CustomSort = comparer;
Sorting Ip resets now.排序 Ip 现在重置。 But double sorting with shift
is incorrect.但是使用shift
双重排序是不正确的。 How to fix?怎么修?
You can clear the sorting of a column by setting the SortDirection
property to null
:您可以通过将SortDirection
属性设置为null
来清除列的排序:
e.Column.SortDirection = null;
If you want to remove your custom sorting, you could set the CustomSort
property to null
:如果要删除自定义排序,可以将CustomSort
属性设置为null
:
ListCollectionView lcv = (ListCollectionView)CollectionViewSource.GetDefaultView(dg.ItemsSource);
lcv.CustomSort = null;
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