我正在WPF TreeView
上工作。我可以在树下添加新的项目,但我无法从列表中删除它们。在我的代码中,我试图获取所选树项目的索引并尝试删除它。但代码返回索引“-1”。这导致了ArgumentOutOfRangeException
。WPF Treeview删除操作
请帮助解决这个问题。
<Window x:Class="MyTreeStructure.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Button Content="ADD" Height="23" HorizontalAlignment="Left" Margin="211,50,0,0"
Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
<TreeView Height="200" HorizontalAlignment="Left" Margin="27,12,0,0" Name="treeView1"
VerticalAlignment="Top" Width="120" >
<TreeViewItem Name="Parent" Header="My Tree Content">
</TreeViewItem>
</TreeView>
<TextBox Height="23" HorizontalAlignment="Left" Margin="211,12,0,0" Name="textBox1"
VerticalAlignment="Top" Width="120" />
<Button Content="Delete" Height="23" HorizontalAlignment="Left" Margin="211,79,0,0"
Name="button2" VerticalAlignment="Top" Width="75" Click="button2_Click" />
</Grid>
</Window>
namespace MyTreeStructure
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
TreeViewItem temp = new TreeViewItem();
temp.Header = textBox1.Text;
Parent.Items.Add(temp);
}
private void button2_Click(object sender, RoutedEventArgs e)
{
textBox1.Text = treeView1.SelectedItem.ToString();
Parent.Items.RemoveAt(treeView1.Items.IndexOf(treeView1.SelectedItem));
**// Here I am getting exception. What should be the code here ??**
}
}
}
嗨Botz Parent.Items.Remove(...)不会导致任何结果。如果我硬编码某个职位的工作如预期的那样://Parent.Items.RemoveAt(2); – vrbilgi 2010-11-22 09:51:02