如何从数据库 WPF 创建带有父/子的动态 TreeView
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/14190169/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to create Dynamic TreeView with Parent/Child from database WPF
提问by Rocky
I am trying to create a Dynamic Treeview with the following code. I am using User Control
我正在尝试使用以下代码创建动态树视图。我正在使用用户控制
On Control Load
控制负载
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;
}
With this code I am able to add an item but it is not adding properly. First it is adding an empty node under and the items are getting added after that.
使用此代码，我可以添加一个项目，但添加不正确。首先，它在下面添加一个空节点，然后添加项目。
What I want is items should add without adding any empty node, and on clicking on the Parent node, Child node should get added.
我想要的是在不添加任何空节点的情况下添加项目，并且在单击父节点时，应该添加子节点。
How to add a child node into parent node?
如何将子节点添加到父节点？
回答by Rocky
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
}
回答by Sebastian K
I found using a treeview in WPF quite challenging. This article was very helpful:
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
http://www.codeproject.com/Articles/26288/Simplifying-the-WPF-TreeView-by-Using-the-ViewMode
