Modifica

Condividi tramite


TreeNode.Parent Property

Definition

Gets the parent tree node of the current tree node.

public:
 property System::Windows::Forms::TreeNode ^ Parent { System::Windows::Forms::TreeNode ^ get(); };
public System.Windows.Forms.TreeNode Parent { get; }
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.TreeNode Parent { get; }
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.TreeNode? Parent { get; }
member this.Parent : System.Windows.Forms.TreeNode
[<System.ComponentModel.Browsable(false)>]
member this.Parent : System.Windows.Forms.TreeNode
Public ReadOnly Property Parent As TreeNode

Property Value

A TreeNode that represents the parent of the current tree node.

Attributes

Examples

The following code example displays the Text and Index property values of the TreeNode represented by the Parent property of the TreeView.SelectedNode. This example requires that you have a Form with a TreeView control on it. The TreeView should have at least two root nodes, each having at least one child node.

private:
   void treeView1_AfterSelect( Object^ /*sender*/, TreeViewEventArgs^ e )
   {
      /* Display the Text and Index of the
            * selected tree node's Parent. */
      if ( e->Node->Parent != nullptr && e->Node->Parent->GetType() == TreeNode::typeid )
      {
         statusBar1->Text = String::Format( "Parent: {0}\n Index Position: {1}", e->Node->Parent->Text, e->Node->Parent->Index );
      }
      else
      {
         statusBar1->Text = "No parent node.";
      }
   }
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{  
   /* Display the Text and Index of the 
    * selected tree node's Parent. */
   if(e.Node.Parent!= null && 
     e.Node.Parent.GetType() == typeof(TreeNode) )
   {
      statusBar1.Text = "Parent: " + e.Node.Parent.Text + "\n"
         + "Index Position: " + e.Node.Parent.Index.ToString();
   }
   else
   {
      statusBar1.Text = "No parent node.";
   }
}
Private Sub treeView1_AfterSelect(sender As Object, _
  e As TreeViewEventArgs) Handles treeView1.AfterSelect
   ' Display the Text and Index of the 
   ' selected tree node's Parent. 
   If (e.Node.Parent IsNot Nothing) 
      If (e.Node.Parent.GetType() Is GetType(TreeNode)) Then
         statusBar1.Text = "Parent: " + e.Node.Parent.Text + _
           ControlChars.Cr + "Index Position: " + e.Node.Parent.Index.ToString()
      End If
   Else
      statusBar1.Text = "No parent node."
   End If
End Sub

Remarks

If the tree node is at the root level, the Parent property returns null.

Applies to