TreeNode.GetNodeCount(Boolean) Metode

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Mengembalikan jumlah simpul pohon anak.

public:
 int GetNodeCount(bool includeSubTrees);

public int GetNodeCount (bool includeSubTrees);

member this.GetNodeCount : bool -> int

Public Function GetNodeCount (includeSubTrees As Boolean) As Integer

Parameter

includeSubTrees

Boolean

true jika jumlah yang dihasilkan mencakup semua simpul pohon secara tidak langsung berakar pada simpul pohon ini; jika tidak, false.

Mengembalikan

Int32

Jumlah simpul pohon anak yang ditetapkan ke Nodes koleksi.

Contoh

Contoh kode berikut mengatur PathSeparator properti dari TreeView dan menampilkan jumlah simpul pohon anak yang terkandung dalam TreeNodeCollection dari SelectedNode. Persentase simpul pohon anak terhadap total simpul pohon dalam kontrol tampilan pohon juga ditampilkan. Contoh ini mengharuskan Anda memiliki Form dengan Button, dan TreeView kontrol dengan TreeNodeCollection yang memiliki beberapa TreeNode objek (sebaiknya dengan tiga tingkat atau lebih).

void myButton_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{

   // Set the tree view's PathSeparator property.
   myTreeView->PathSeparator = ".";

   // Get the count of the child tree nodes contained in the SelectedNode.
   int myNodeCount = myTreeView->SelectedNode->GetNodeCount( true );
   Decimal myChildPercentage = ((Decimal)myNodeCount / (Decimal)myTreeView->GetNodeCount( true )) * 100;

   // Display the tree node path and the number of child nodes it and the tree view have.
   MessageBox::Show( String::Concat( "The '", myTreeView->SelectedNode->FullPath, "' node has ", myNodeCount, " child nodes.\nThat is ", String::Format( "{0:###.##}", myChildPercentage ), "% of the total tree nodes in the tree view control." ) );
}

private void myButton_Click(object sender, System.EventArgs e)
{
   // Set the tree view's PathSeparator property.
   myTreeView.PathSeparator = ".";

   // Get the count of the child tree nodes contained in the SelectedNode.
   int myNodeCount = myTreeView.SelectedNode.GetNodeCount(true);
   decimal myChildPercentage = ((decimal)myNodeCount/
     (decimal)myTreeView.GetNodeCount(true)) * 100;

   // Display the tree node path and the number of child nodes it and the tree view have.
   MessageBox.Show("The '" + myTreeView.SelectedNode.FullPath + "' node has "
     + myNodeCount.ToString() + " child nodes.\nThat is "
     + string.Format("{0:###.##}", myChildPercentage)
     + "% of the total tree nodes in the tree view control.");
}

Private Sub myButton_Click(ByVal sender As Object, _
  ByVal e As System.EventArgs) Handles myButton.Click
   ' Set the tree view's PathSeparator property.
   myTreeView.PathSeparator = "."

   ' Get the count of the child tree nodes contained in the SelectedNode.
   Dim myNodeCount As Integer = myTreeView.SelectedNode.GetNodeCount(True)
   Dim myChildPercentage As Decimal = CDec(myNodeCount) / _
      CDec(myTreeView.GetNodeCount(True)) * 100

   ' Display the tree node path and the number of child nodes it and the tree view have.
   MessageBox.Show(("The '" + myTreeView.SelectedNode.FullPath + "' node has " _
      + myNodeCount.ToString() + " child nodes." + Microsoft.VisualBasic.ControlChars.Lf _
      + "That is " + String.Format("{0:###.##}", myChildPercentage) _
      + "% of the total tree nodes in the tree view control."))
End Sub

Lihat juga

• Nodes
• TreeNodeCollection