TreeNode.GetNodeCount(Boolean) TreeNode.GetNodeCount(Boolean) TreeNode.GetNodeCount(Boolean) TreeNode.GetNodeCount(Boolean) Method

定義

傳回子樹狀節點的數目。Returns the number of child tree nodes.

public:
 int GetNodeCount(bool includeSubTrees);
public int GetNodeCount (bool includeSubTrees);
member this.GetNodeCount : bool -> int
Public Function GetNodeCount (includeSubTrees As Boolean) As Integer

參數

includeSubTrees
Boolean Boolean Boolean Boolean

如果產生的計數包括間接以這個樹狀節點做為根部的所有樹狀節點,則為 true,否則為 falsetrue if the resulting count includes all tree nodes indirectly rooted at this tree node; otherwise, false.

傳回

指派給 Nodes 集合的子樹狀節點數目。The number of child tree nodes assigned to the Nodes collection.

範例

下列程式碼範例會設定PathSeparator的屬性TreeView ,並顯示SelectedNode包含在中TreeNodeCollection的子樹狀節點的數目。The following code example sets the PathSeparator property of a TreeView and displays the number of child tree nodes that are contained in the TreeNodeCollection of the SelectedNode. 同時也會顯示樹狀檢視控制項中子樹狀節點與樹狀結構節點總數的百分比。The percentage of child tree node to total tree nodes in the tree view control is also displayed. 這個範例需要Form您具有Button具有的, TreeNodeCollection以及TreeView具有具有數個TreeNode物件之的控制項(最好是三個以上的層級)。This example requires that you have a Form with a Button, and a TreeView control with a TreeNodeCollection that has several TreeNode objects (preferably with three or more levels).

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

適用於

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