TreeNode.GetNodeCount(Boolean) Metod

Definition

Namnområde:
System.Windows.Forms
Sammansättning:
System.Windows.Forms.dll
Källa:
TreeNode.cs
Källa:
TreeNode.cs
Källa:
TreeNode.cs
Källa:
TreeNode.cs
Källa:
TreeNode.cs

Returnerar antalet underordnade trädnoder.

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

Parametrar

includeSubTrees
Boolean

trueom det resulterande antalet inkluderar alla trädnoder som indirekt rotas vid den här trädnoden; annars . false

Returer

Int32

Antalet underordnade trädnoder som tilldelats Nodes samlingen.

Exempel

Följande kodexempel anger PathSeparator egenskapen för en TreeView och visar antalet underordnade trädnoder som finns i TreeNodeCollection i SelectedNode. Procentandelen av den underordnade trädnoden till de totala trädnoderna i trädvisningskontrollen visas också. Det här exemplet kräver att du har en Form med en Button, och en TreeView kontroll med en TreeNodeCollection som har flera TreeNode objekt (helst med tre eller fler nivåer).

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

Gäller för

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