TreeList.GetAllCheckedNodes Method

List<TreeListNode> list = treeList1.GetAllCheckedNodes();
foreach (TreeListNode node in list) {
    decimal budget = Convert.ToDecimal(node["BUDGET"])*1.1m;
    node["BUDGET"] = budget;
}

Dim list As List(Of TreeListNode) = treeList1.GetAllCheckedNodes()
For Each node As TreeListNode In list
    Dim budget As Decimal = Convert.ToDecimal(node("BUDGET")) * 1.1D
    node("BUDGET") = budget
Next 

using DevExpress.XtraTreeList.Nodes.Operations;

GetUncheckedNodesOperation op = new GetUncheckedNodesOperation();
treeList1.NodesIterator.DoOperation(op);
//Get the number of unchecked nodes: 
int count = op.TargetNodes.Count;

//The operation class that collects unchecked nodes 
class GetUncheckedNodesOperation : TreeListOperation {
    public List<TreeListNode> TargetNodes = new List<TreeListNode>();
    public GetUncheckedNodesOperation() : base() { }
    public override void Execute(TreeListNode node) {
        if (node.CheckState == CheckState.Unchecked)
            TargetNodes.Add(node);
    }
}

Imports DevExpress.XtraTreeList.Nodes.Operations
Imports DevExpress.XtraTreeList.Nodes

Dim op As GetUncheckedNodesOperation = New GetUncheckedNodesOperation()
treeList1.NodesIterator.DoOperation(op)
'Get the number of unchecked nodes: 
Dim count As Integer = op.TargetNodes.Count

'The operation class that collects unchecked nodes 
Friend Class GetUncheckedNodesOperation
    Inherits TreeListOperation
    Public TargetNodes As List(Of TreeListNode) = New List(Of TreeListNode)()
    Public Sub New()
        MyBase.New()
    End Sub 
    Public Overrides Sub Execute(ByVal node As TreeListNode)
        If node.CheckState = CheckState.Unchecked Then 
            TargetNodes.Add(node)
        End If 
    End Sub 
End Class 

List<TreeListNode> list = treeList1.GetAllCheckedNodes();
foreach (TreeListNode node in list) {
    decimal budget = Convert.ToDecimal(node["BUDGET"])*1.1m;
    node["BUDGET"] = budget;
}

Dim list As List(Of TreeListNode) = treeList1.GetAllCheckedNodes()
For Each node As TreeListNode In list
    Dim budget As Decimal = Convert.ToDecimal(node("BUDGET")) * 1.1D
    node("BUDGET") = budget
Next