WPF C＃从ListBoxItem中的Textblock获取文本

Question

如何访问ListBoxItem内的Stackpanel内的Textblock？

例如：

ListBoxItem MyItem = new ListBoxItem();
StackPanel StackPnl = new StackPanel();
TextBlock Title = new TextBlock();

Title.Text = "Item 1";

StackPnl.Children.Add(Title);
MyItem.Content = StackPnl;

我如何以后使用Listbox.SelectedItem访问该Textblock的Text属性？

Answer 1

试试这个：

//listBox1 is your ListBox
ListBoxItem MyItem = listBox1.SelectedItem as ListBoxItem;
if(MyItem != null)
{
    StackPanel sp = MyItem.Content as StackPanel;
    if(sp != null && sp.Children.Count > 0)
    {
        TextBlock textBlock = sp.Children[0] as TextBlock;
        if(textBlock != null)
        {
            string text = textBlock.Text;
        }
    }
}