c# - 我如何从选定的 ListView 项目中获取名称？

Question

我有一个 ListView，它具有到 TreeView 的数据绑定(bind)，而 TreeView 是数据绑定(bind)到 XmlDataProvider 的。在 ListView 中，您可以一次选择多项。我的问题是我需要知道选择了哪些项目。我如何从 ListViewItems 中获取名称？

XAML:

<ListView x:Name="listViewCards" DataContext="{Binding ElementName=treeViewCategory, Path=SelectedItem}" ItemsSource="{Binding XPath=./card/title, UpdateSourceTrigger=PropertyChanged}" KeyDown="listViewCards_KeyDown" />

C#:

private void listViewCards_KeyDown(object sender, KeyEventArgs e)
{
    IList selectedListViewItems = listViewCards.SelectedItems;
    if (selectedListViewItems.Count > 1)
    {
        //delete all selected items from xml:
        foreach (XmlNode node in xmlNode.ChildNodes)
        {
            if (node.InnerText.Equals( ??? ))
            {
                //mark for deleting
            }
        }
    }
}

Answer 1

The objekt of type "System.Windows.Controls.SelectedItemCollection" can´t convert into "System.Windows.Controls.ListViewItem"

试试这个:

private void listViewCards_KeyDown(object sender, KeyEventArgs e)
{
     IList selectedListViewItems = listViewCards.SelectedItems;
     if (selectedListViewItems.Count > 1)
     {
         //delete all selected items from xml:
         var collection = selectedListViewItems.Cast<XmlNode>();  //assuming your underlying data is XmlNode
         foreach(XmlNode node in collection)
         {
             //do whatever you want to do with node
             if (node.InnerText.Equals( ??? ))
             {
                 //mark for deleting
             }
         }
     }
}

相关:How to cast a System.Windows.Controls.SelectedItemCollection?