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

• TreeView Control