#Wpf dynamic treeview example c code#
#Wpf dynamic treeview example c windows#

We can remove the node from tree nodes collection, by using it’s index or key or different other ways. This way, we can add nodes & sub-nodes in different hierarchical level in TreeView control. TreeNode sub_node = ('Child-1', 'Sub Node')

#Wpf dynamic treeview example c code#

Below code adds the sub-node to the tree node we got the tree node, from above statement Hence, we can use the same way (as above), to add the sub-nodes to the TreeNode. TreeNode type also has Nodes property (of TreeNodeCollection type) to manage the collection of nodes. As I mentioned above, each tree node is of TreeNode type. By using the tree node, we can add sub-nodes to it. When we add the node to the TreeView control it returns the tree node that being added to the collection.

Usually, it is good to give unique key values to easily figure out the tree node from the collection of Nodes. TreeNode node = ('Parent', 'Parent Node') As discussed, label will be displayed, and key will be set to it’s Name property Below is an example, which adds a node with key & label. By adding, key to the node enables to easily figure out the node from the Nodes collection. And the label will be displayed as the TreeNode‘s Text. Key is used to search for the node, and it is assigned to TreeNode‘s Name property. This method is more useful than the previous one. We have another variance of Add() method, which takes a key and a label as arguments to add a new tree node. The above statement adds a new tree node, and returns the tree node that has added to the tree Nodes collection. Usually, we use the simple Add() method variance to add a new tree node with labeled text. Add() method has number of variances these are used to add a node with label text, with key, with image index etc. TreeNodeCollection has Add() method, which allows to add a new tree node to the end of the Nodes collection. Nodes is of TreeNodeCollection type, that represents the collection of tree nodes assigned to the TreeView control. These collection of nodes are managed through it’s Nodes property. Adding nodes to the TreeView controlĪ Treeview control is the collection of nodes each node is in the same level or in different hierarchical position in the tree structure. Through this Article, we are going to discuss the methods used to manage the control. You can add the nodes to the control in design view also, by selecting Nodes property from the Properties dialog. Visual Studio automatically, creates a variable for this control and by using this we can use the features of the control. In Form’s design view, add the TreeView control from the Toolbox.

#Wpf dynamic treeview example c windows#

Add TreeView control to the FormĬreate a C# Windows Forms Application in Visual Studio IDE. We will discuss, adding and removing nodes in TreeView control. Through this article, we are going to discuss, using TreeView control in C# Windows applications. All the nodes in the TreeView control are displayed in an hierarchical form, for better readability and control. A node can have sub-nodes too and each sub-node has it’s own nodes, and so on. Each item in TreeView control is called a node. xaml files in the project solution:Įach level node has a ViewModel for data binding.TreeView control in C# is used to display the items in hierarchical form. Each level node has its own HierarchicalDataTemplate. It is a 4-level TreeView with root node at level 0. Obviously, this article aims at intermediate and advanced WPF users. I do not discuss MVVM here since tons of information can be found on the web. I use TreeView + HierarchicalDataTemplate with multi-level binding because it is one of the least understood XAML binding topics.

Simplifying the WPF TreeView by Using the ViewModel Pattern.

There are WPF TreeView samples on the web, but they are mostly XAML-based. Charles Petzold wrote a great WPF book using lots of code-behind. Even if you may never need to use it, understanding it will help you better appreciate how WPF works. The code-behind approach is a kind of advanced concept. It can be flexible and powerful when it comes to dynamic UI creation and removal of difficult XAML binding. However, the purpose of this article is to show there is a code-behind way of creating UI in WPF without XAML. To create UI with WPF, you should generally go with XAML almost all the time.