How to display a tree structure in WinForms using TreeView?

9 months ago

Liam

2 minutes

Displaying a tree structure in WinForms using TreeView is very simple and can be done by following these steps:

Create a new WinForms application project in Visual Studio.
Drag a TreeView control onto the form and set its Dock property to Fill to make it fill the entire form.
Write code to add nodes to a TreeView, you can add nodes in the Form_Load event. For example:

private void Form1_Load(object sender, EventArgs e)
{
    TreeNode node1 = treeView1.Nodes.Add("Node 1");
    TreeNode node2 = treeView1.Nodes.Add("Node 2");

    TreeNode subnode1 = node1.Nodes.Add("Subnode 1");
    TreeNode subnode2 = node1.Nodes.Add("Subnode 2");
}

If needed, additional properties can be set for TreeView nodes, such as text color, background color, icon, etc. These properties can be set when adding nodes or modified as needed.
By running the application, you will be able to see the hierarchical structure displayed on the TreeView. You can expand and collapse nodes to view their child nodes.

By following the above steps, you can display a tree structure using TreeView. You can add nodes and customize node properties according to your specific needs to display the desired tree structure.