TreeNode::GetNodeCount Method (Boolean)
.NET Framework (current version)
Returns the number of child tree nodes.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Parameters
- includeSubTrees
-
Type:
System::Boolean
true if the resulting count includes all tree nodes indirectly rooted at this tree node; otherwise, false.
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. The percentage of child tree node to total tree nodes in the tree view control is also displayed. 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." ) ); }
.NET Framework
Available since 1.1
Available since 1.1
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