在列表框

Question

XAML

<ListBox ItemsSource="{Binding}" HorizontalContentAlignment="Left" x:Name="lstbxindex" SelectionMode="Extended" Foreground="White" FontSize="20px" Height="241" BorderBrush="#555555" Margin="10,34,16,0" VerticalAlignment="Top" Width="322" Background="#555555" 
   <ListBox.ItemTemplate>
       <DataTemplate>
           <WrapPanel Orientation="Horizontal" Margin="5" >
              <Label x:Name="items" Content="{Binding ProjectRow.Name}" Margin="35,0,0,0" MouseDoubleClick="items_MouseDoubleClick" Foreground="White"></Label>
           </WrapPanel>
       </DataTemplate>
   </ListBox.ItemTemplate>
</ListBox>

当我双击listboxitems时，标签转为使用此文本框更改listboxitems更改文本框。然后单击输入文本框再次转到标签。如何在列表框中添加动态文本框，它绑定了代码隐藏中的值。

Answer 1

你想要这样的东西。将两个控件放在datatemplate中，其中一个控件折叠。

然后在代码后面切换可见性属性。两者都绑定到同一属性，因此将保持彼此同步。

XAML

<TextBlock Visibility="Visible" Name="TextBlockName" Text="{Binding ProjectRow.Name}" MouseDown="TextBlockName_OnMouseDown" ToolTip="Double click to edit"/>
        <TextBox Visibility="Collapsed" Name="TextBoxName" Text="{Binding ProjectRow.Name, UpdateSourceTrigger=PropertyChanged}"/>

背后的代码

private void TextBlockName_OnMouseDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ClickCount == 2)
            {
                this.TextBlockName.Visibility = Visibility.Collapsed;
                this.TextBoxName.Visibility = Visibility.Visible;
            }
        }

    private void TextBoxName_OnMouseDoubleClick(object sender, MouseButtonEventArgs e)
    {
        this.TextBlockName.Visibility = Visibility.Visible;
        this.TextBoxName.Visibility = Visibility.Collapsed;
    }

Answer 2

创建自定义网格并使用它：

public class NGrid : Grid
{
    public NGrid()
    {
        _textBox = new TextBox { Visibility = Visibility.Hidden };
        _label = new Label();
        _textBox.KeyDown += _textBox_KeyDown;
        Children.Add(_textBox);
        Children.Add(_label);
    }

    private void _textBox_KeyDown(object sender, KeyEventArgs e)
    {
        if (_isEditMode && e.Key == Key.Return)
        {
            _textBox.Visibility = Visibility.Hidden;
            _label.Content = _textBox.Text;

        }
    }

    protected override void OnMouseDown(MouseButtonEventArgs e)
    {
        if (e.ClickCount == 2 && _isEditMode == false)
        {
            _textBox.Visibility = Visibility.Visible;
            Keyboard.Focus(_textBox);
        }
        base.OnMouseDown(e);
    }

    bool _isEditMode;
    TextBox _textBox;
    Label _label;
}

没有测试它，但应该可以工作。