ListBox中的TextBox，Button和ListBox [英] TextBox, Button and ListBox in a ListBox

问题描述

我有一个列表框，每个列表项中都有一堆控件.

I have a listbox with a bunch of contols in each list item.

<ListBox x:Name="projectList" IsSynchronizedWithCurrentItem="True">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <StackPanel>
                <TextBlock Text="{Binding Name}" />
                <ListBox x:Name="taskList" ItemsSource="{Binding Tasks}">
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <StackPanel>
                                <TextBlock Text="{Binding Name}" />
                            </StackPanel>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>
                <TextBox x:Name="textBoxTask" />
                <Button
                    x:Name="ButtonAddNewTask"
                    Content="Test"
                    CommandParameter="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=DataContext}"
                    Click="ButtonAddNewTask_Click"
                    />
            </StackPanel>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

当我单击列表框中的按钮时，我想向列表框中的列表框中添加新项目.我走了这么远.所以我的问题是如何掌握文本框以及如何更新列表框?

When I click on the button in the listbox i want to add a new item to the listbox within the listbox. I've come this far. So my question is how do I get hold of the textbox and how do I update the listbox?

这是我的点击事件

private void ButtonAddNewTask_Click(object sender, RoutedEventArgs e)
{
    Button button = (Button)sender;
    Project proj = button.DataContext as Project;
    if(proj.Tasks == null)
        proj.Tasks = new List<Task>();

    proj.Tasks.Add(new Task("Added Task"));
}

感谢

推荐答案

可以说，此解决方案适用于手头的任务.

This solution worked for the task at hand so to speak.

    private void ButtonAddNewTask_Click(object sender, RoutedEventArgs e)
    {
        Button button = (Button)sender;
        DependencyObject obj = LogicalTreeHelper.GetParent(button);
        StackPanel item = obj as StackPanel;
        TextBox textBox = item.FindName("textBoxTask") as TextBox;
        ListBox listBox = item.FindName("taskList") as ListBox;

        Project proj = button.DataContext as Project;
        if(proj.Tasks == null)
            proj.Tasks = new List<Task>();

        listBox.ItemsSource = proj.Tasks;
        listBox.Items.Refresh();
    }

这篇关于ListBox中的TextBox，Button和ListBox的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！