删除项目后,WPF Listbox多项选择将清除

时间:2014-04-08 11:17:17

标签: c# wpf listbox

我在WPF中有一个带有DataBinded Xml Collection的ListBox。我将SelectionMode设置为Extended,以便用户可以选择多个项目。我有一个RemoveItem命令,它遍历selecteditems并从列表中删除它们:

   var selecteditems = this.SelectedItems;
   for(int i = 0; i < selecteditems.Count; i++ )
   {
        ItemBox ouritem = (ItemBox)this.ItemContainerGenerator.ContainerFromItem(this.SelectedItems[i]);
         XmlDataProvider prov = this.DataContext as XmlDataProvider;
         XmlNode MainNode = prov.Document.SelectSingleNode("//MainNode");
         MainNode.RemoveChild(selecteditems[i] as XmlNode);

   }

问题是删除选择的第一项后,清除选择并选择列表的最后一项。

如何保留我开始的选择并确保删除所有项目?

2 个答案:

答案 0 :(得分:1)

旧的'先复制'方法怎么样?:

IList selectedItems = new List<YourDataType>();
foreach (YourDataType item in this.SelectedItems) selectedItems.Add(item);
for (int index = selectedItems.Count - 1; index >= 0; index--)
{
    // remove each selected item here
}

答案 1 :(得分:0)

以反向迭代执行循环。

 var selecteditems = this.SelectedItems;
 for(int i = selecteditems.Count-1; i>=0; i-- )
 {
    ItemBox ouritem = (ItemBox)this.ItemContainerGenerator.ContainerFromItem(this.SelectedItems[i]);
     XmlDataProvider prov = this.DataContext as XmlDataProvider;
     XmlNode MainNode = prov.Document.SelectSingleNode("//MainNode");
     MainNode.RemoveChild(selecteditems[i] as XmlNode);

 }