TreeNode.Parent Properti

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Sumber:

TreeNode.cs

Mendapatkan simpul pohon induk dari simpul pohon saat ini.

public:
 property System::Windows::Forms::TreeNode ^ Parent { System::Windows::Forms::TreeNode ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.TreeNode? Parent { get; }

[<System.ComponentModel.Browsable(false)>]
member this.Parent : System.Windows.Forms.TreeNode

Public ReadOnly Property Parent As TreeNode

Nilai Properti

TreeNode

TreeNode yang mewakili induk simpul pohon saat ini.

Atribut

BrowsableAttribute

Contoh

Contoh kode berikut menampilkan Text nilai properti dan Index dari yang TreeNode diwakili oleh Parent properti .TreeView.SelectedNode Contoh ini mengharuskan Anda memiliki Form dengan TreeView kontrol di atasnya. Harus TreeView memiliki setidaknya dua simpul akar, masing-masing memiliki setidaknya satu simpul anak.

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

Keterangan

Jika simpul pohon berada di tingkat akar, Parent properti mengembalikan null.