如何在WPF DataGridColumn上更改第一个排序方向 [英] How to change first sort direction on WPF DataGridColumn
问题描述
现在(默认)当您点击用户排序的 DataGridColumn
中的标题时,它将按第一次点击并按次序降序排序。
Right now (default) when you click a header on a user sortable DataGridColumn
it sorts it ascending on first click and descending on second click.
如何在第一次点击并按升序排列时按顺序排序?
How can I make it sort descending on first click and ascending on second click?
推荐答案
我想出了一个办法,不知道是否是最好的方法。但是基本上当排序事件触发并且当前的SortDirection为空时,我将其设置为升序,以便默认排序器将使SortDirection反向降序,这仅在第一个排序中发生,因为这是SortDirection唯一的null。 / p>
I figured out a way to do it, not sure if it is the best way. But basically when the sorting event triggers and the current SortDirection is null I set it to Ascending so that the default sorter will reverse the SortDirection to descending, and this only happens on the first sort because that is the only time the SortDirection is null.
myGrid.Sorting += (s, e) => e.Column.SortDirection = e.Column.SortDirection ?? ListSortDirection.Ascending;
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