WPF ListView SelectedItem 为空 [英] WPF ListView SelectedItem is null
本文介绍了WPF ListView SelectedItem 为空的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个列表视图,其中有一个复选框作为列之一.如果我单击除实际复选框之外的任何位置,则 ListView 的 SelectedItem 会按预期设置为当前选定的行.另一方面,如果我单击复选框(没有先单击行),则 SelectedItem 为空或先前单击的行.
I have a Listview that has a checkbox as one of the columns. If I click anywhere but the actual checkbox the SelectedItem of the ListView is set to the current selected row, as expected. If, on the other hand I click onto the checkbox (without clicking on the row first) then the SelectedItem is null or the previously clicked row.
谁能帮帮我....
干杯
<ListView Width="auto" SelectionMode="Single" x:Name="listBox" ItemsSource="{Binding MyData}" SelectedItem="{Binding Path=SelectedMyData}">
<ListView.View>
<GridView>
<GridViewColumn Header="Date" Width="120">
<GridViewColumn.CellTemplate>
<DataTemplate>
<ContentPresenter Style="{StaticResource DateTimeContent}" Content="{Binding MyDate}"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Is Correct" Width="100">
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox IsThreeState="False"
Checked="OnChkChecked"
Unchecked="OnChkChecked"
IsChecked="{Binding IsCorrect}"></CheckBox>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox IsThreeState="False"
Checked="OnChkChecked"
Unchecked="OnChkChecked"
IsChecked="{Binding IsCorrect}"></CheckBox>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
推荐答案
很简单,只需处理复选框上的 Click 事件:
It's very easy, just handle Click event on your checkbox:
private void CheckBox_Click(object sender, RoutedEventArgs e) {
var cb = sender as CheckBox;
var item = cb.DataContext;
myListView.SelectedItem = item;
}
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