It will probably be something like this. Give some more detail as to what exactly you want to do if you need more. //In Page load foreach (DataRow row in topics.Rows) { TreeNode node = new TreeNode(dr[“name”], dr[“topicId”]) node.PopulateOnDemand = true; TreeView1.Nodes.Add(node); } /// protected void PopulateNode(Object sender, TreeNodeEventArgs e) { string topicId = e.Node.Value; … Read more
I’m not a VB guy but in C# I do it this way: Some Win32 native functions: [DllImport(“user32.dll”, CharSet = CharSet.Unicode)] public static extern int GetScrollPos(IntPtr hWnd, int nBar); [DllImport(“user32.dll”, CharSet = CharSet.Unicode)] public static extern int SetScrollPos(IntPtr hWnd, int nBar, int nPos, bool bRedraw); private const int SB_HORZ = 0x0; private const int SB_VERT … Read more
You dont need a nested template here, since TreeView control will take care of nesting it based on the DataType it requires. So just define Two HierarchicalDataTemplates for Album and Artist Type and one ordinary DataTemplate for your Track class. <HierarchicalDataTemplate DataType=”{x:Type local:Artist}” ItemsSource=”{Binding Albums}” > <TextBlock Text=”{Binding Name}”/> </HierarchicalDataTemplate> <HierarchicalDataTemplate DataType=”{x:Type local:Album}” ItemsSource=”{Binding Tracks}” … Read more
I have a variation on SoMoS implementation that uses an attached property declared on a derivation of the base TreeView control to track the selection state of the TreeViewItems. This keeps the selection tracking on the TreeViewItem element itself, and off of the model object being presented by the tree-view. This is the new TreeView … Read more
A solution that doesn’t need to parse XML in order to bind its contents to a TreeView doesn’t exist (and if it exits, internally, of course, XML is parsed). Anyway you could implement this yourself by using LINQ to XML: private void Form1_Load(object sender, EventArgs e) { var doc = XDocument.Load(“data.xml”); var root = doc.Root; … Read more
You are correct in that there is no data binding. The reason being is that TreeViews are hierarchical data structures. That is, not a straight list. As a result the databind option is invalid to say a List structure. Sadly it’s creating your own populate methods or buying 3rd party controls (which in the end … Read more
Let me answer my own question. Code All you need to do is a XAML file and a code behind: First you need draw Toggle Button: From Triangle button to Plus-Minus button: draw a rectangle with dark border, then draw two lines, one vertical … Read more
I had the same issue. You can check out my implementation AndroidTreeView. Its N-level tree. Custom style for nodes Save state after rotation
Well, it would be easier if your element hierarchy was more like… <node type=”forest”> <node type=”tree”> … …rather than your current schema. As-is, you’ll need 4 HierarchicalDataTemplates, one for each hierarchical element including the root, and one DataTemplate for leaf elements: <Window.Resources> <HierarchicalDataTemplate DataType=”forestPad” ItemsSource=”{Binding XPath=forest}”> <TextBlock Text=”a forestpad” /> </HierarchicalDataTemplate> <HierarchicalDataTemplate DataType=”forest” ItemsSource=”{Binding XPath=tree}”> … Read more
The problem is that, as you recursively descend the JToken hierarchy, you also need to recursively descend the TreeNode hierarchy you are creating, adding child nodes to the parent node just created, rather than the root node, along the lines of Recursion, parsing xml file with attributes into treeview c#. Thus if you do: private … Read more