How to: Determine Which TreeView Node Was Clicked (Windows Forms)

When working with the Windows Forms TreeView control, a common task is to determine which node was clicked, and respond appropriately.

To determine which TreeView node was clicked

1. Use the EventArgs object to return a reference to the clicked node object.

2. Determine which node was clicked by checking the TreeViewEventArgs class, which contains data related to the event.

   Private Sub TreeView1_AfterSelect(ByVal sender As System.Object, _
   ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterSelect
      ' Determine by checking the Node property of the TreeViewEventArgs.
      MessageBox.Show(e.Node.Text)
   End Sub
   

   protected void treeView1_AfterSelect (object sender, 
   System.Windows.Forms.TreeViewEventArgs e)
   {
      // Determine by checking the Text property.
      MessageBox.Show(e.Node.Text);
   }
   

   private:
      void treeView1_AfterSelect(System::Object ^  sender,
         System::Windows::Forms::TreeViewEventArgs ^  e)
      {
         // Determine by checking the Text property.
         MessageBox::Show(e->Node->Text);
      }
   

   Note
   As an alternative, you can use the MouseEventArgs of the MouseDown or MouseUp event to get the X and Y coordinate values of the Point where the click occurred. Then, use the TreeView control's GetNodeAt method to determine which node was clicked.

See Also

Other Resources

TreeView Control (Windows Forms)