UWP Listview 多选
最近在做一个项目的时候,用到了Listview,需要选择一个item,来进行删除。
但是当开启了
PullToRefreshListViewControl.IsMultiSelectCheckBoxEnabled = true; PullToRefreshListViewControl.SelectionMode = ListViewSelectionMode.Multiple;
点击Item还是进入了Listview的Click事件。。。。。。
这里我们就需要用到一个小技巧了,顶一个一个全局变量 bool bMultiSelect = false;
最终效果
在Click事件中,判断是不是多选即可。
现在在xaml中定义三个button,实际工作不需要这么多,我这方便说明演示
一个是开启多选模式,一个是取消多选模式,最后是删除事件
<Button Content="MultiSelect" Click="MultiSelectClick"/> <Button Content="CancelMultiSelect" Click="CancelMultiSelectClick"/> <Button Content="DeleteSelected" Click="DeleteSelectedClick"/>
对应的后台code
private void MultiSelectClick(object sender, RoutedEventArgs e) { bMultiSelect = true; PullToRefreshListViewControl.IsMultiSelectCheckBoxEnabled = true; PullToRefreshListViewControl.SelectionMode = ListViewSelectionMode.Multiple; } private void CancelMultiSelectClick(object sender, RoutedEventArgs e) { bMultiSelect = false; PullToRefreshListViewControl.IsMultiSelectCheckBoxEnabled = false; PullToRefreshListViewControl.SelectionMode = ListViewSelectionMode.None; } private async void DeleteSelectedClick(object sender, RoutedEventArgs e) { if (PullToRefreshListViewControl.SelectedItems.Count == 0) { Debug.WriteLine("No items selected"); return; } for (int i = PullToRefreshListViewControl.SelectedItems.Count - 1; i >= 0; i--) { FaceSet fs = PullToRefreshListViewControl.SelectedItems[i] as FaceSet; await FacePlusPlusHelper.DeletePersoninCloud(fs.FaceSetToken, fs.OuterId); SampleItems.Remove(fs); } if (SampleItems.Count == 0) { bMultiSelect = false; PullToRefreshListViewControl.IsMultiSelectCheckBoxEnabled = false; PullToRefreshListViewControl.SelectionMode = ListViewSelectionMode.None; } }
然后在Listview的点击事件中屏蔽一下即可
private async void PullToRefreshListViewControl_ItemClick(object sender, ItemClickEventArgs e) {
if(bMultiSelect)
return;
//然后这里写单击item的代码咯
}
o, 对了,PullToRefreshListViewControl是Listview控件。