VB.NET TreeView Control.
The VB.NET Windows TreeView control is used to display a hierarchical collection or list of items. An example is commonly seen with Windows explorer.
Namespace: System::Windows::Forms
System.Windows.Forms (in system.windows.forms.dll)
Creating an new VB.NET Windows forms TreeView.
Dim treeview As New TreeView
Creating the first TreeNode for the TreeView.
Dim treenode As New TreeNode
treenode.Text = "Computers"
Adding the first TreeNode to the TreeView control.
treeview.Nodes.Add(treenode)
Creating TreeNode sub items to add to the first TreeNode.
Dim treenode2 As New TreeNode
treenode2.Text = "DELL"
Dim treenode3 As New TreeNode
treenode3.Text = "HP"
Dim treenode4 As New TreeNode
treenode4.Text = "SONY"
Adding the TreeNode sub items to the first TreeNode.
treenode.Nodes.AddRange(New TreeNode() {treenode2, treenode3, treenode4})
Adding the TreeView Control to the Form.
Me.Controls.Add(treeview)
Setting the selected TreeNode.
treeview.HideSelection = False
treeview.SelectedNode = treeview.Nodes(0).Nodes(1)
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