Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
387 views
in Technique[技术] by (71.8m points)

c# - WPF ListView SelectedItem is null

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.

Can anyone help me out....

Cheers

<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>
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

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;
}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...