如何从数据库WPF中创建父/子动态树视图
本文关键字:动态 视图 创建 数据库 WPF | 更新日期: 2023-09-27 17:50:55
我试图用以下代码创建一个动态树视图。我正在使用用户控制
On Control Load
TreeViewItem treeviewItems = new TreeViewItem();
treeviewItems.ItemsSource = TreeViewDataSource.DefaultView;
treeviewItems.ItemTemplate = GetHierarchicalData(ID, Desc);
treeViewCntrl.Items.Add(treeviewItems);
public HierarchicalDataTemplate GetHierarchicalData(string id, string desc)
{
HierarchicalDataTemplate hierdatatemp = null;
try
{
hierdatatemp = new HierarchicalDataTemplate(typeof(DataTable));
hierdatatemp.ItemsSource = new Binding(itemSourceBindingName);
FrameworkElementFactory textBlock = new FrameworkElementFactory(typeof(TextBlock));
textBlock.SetBinding(TextBlock.TextProperty, new Binding(desc));
hierdatatemp.VisualTree = textBlock;
}
catch (Exception ex)
{ }
return hierdatatemp;
}
有了这个代码,我能够添加一个项目,但它没有正确添加。首先,它在下面添加一个空节点,然后再添加项。
我想要的是项目应该添加而不添加任何空节点,并且在单击父节点时,子节点应该被添加。
如何将子节点添加到父节点?
public TreeViewItem CreateTreeViewItem(string nodeName, string headerText, string ImagePath)
{
TreeViewItem treeViewItem = new TreeViewItem();
try
{
StackPanel stackPanel = new StackPanel();
Label lblHeaderText = new Label();
Image imgFrontIcon;
imgFrontIcon = new Image();
stackPanel.Orientation = Orientation.Horizontal;
if (ImagePath != null && ImagePath != string.Empty)
{
Uri uri = new Uri(@"pack://application:,,," + ImagePath);
BitmapImage bitMapSource = new BitmapImage();
bitMapSource.BeginInit();
bitMapSource.UriSource = uri;
bitMapSource.EndInit();
imgFrontIcon.Source = bitMapSource;
}
lblHeaderText.Content = headerText;
stackPanel.Children.Add(imgFrontIcon);
stackPanel.Children.Add(lblHeaderText);
nodeName = nodeName.Replace("-", "_");
treeViewItem.Name = nodeName;
treeViewItem.Header = stackPanel;
}
catch (Exception ex)
{ }
return treeViewItem
}
我发现在WPF中使用树视图非常具有挑战性。这篇文章很有帮助:
http://www.codeproject.com/Articles/26288/Simplifying-the-WPF-TreeView-by-Using-the-ViewMode