TreeList.FindNode(Predicate<TreeListNode>) Method

Returns the first node that matches the specified criteria.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v19.1.dll

Declaration

C#

public TreeListNode FindNode(
    Predicate<TreeListNode> match
)

VB.NET

Public Function FindNode(
    match As Predicate(Of TreeListNode)
) As TreeListNode

Parameters

Name	Type	Description
match	Predicate<TreeListNode>	The method that defines a set of criteria and determines whether a TreeListNode meets those criteria.

Returns

Type	Description
TreeListNode	The first node that matches the specified criteria. null (Nothing in Visual Basic) if no matching node is found.

Remarks

The FindNode method calls the specified predicate for each node in the data source until the predicate returns true. When this happens, the currently processed node is returned by the FindNode method.

The following example shows how you can get the first node that has the “London” string in the City column:

C#

TreeListNode myNode = treeList1.FindNode((node) => {
    return node["City"].ToString() == "London";
}
);

VB.NET

Dim myNode As TreeListNode = TreeList1.FindNode(Function(node)
    Return node("City").ToString() = "London"
End Function)

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the FindNode(Predicate<TreeListNode>) method.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

XAF_how-to-search-and-focus-nodes-in-the-tree-list-editor-e520/CS/E520.Module.Win/Controllers/WinFilterTreeListViewController.cs#L35

if (!String.IsNullOrEmpty(textToSearch)) {
    matchingNode = treeList.FindNode(node => {
        object currentObject = node.Tag;

VB.NET

XAF_how-to-search-and-focus-nodes-in-the-tree-list-editor-e520/VB/E520.Module.Win/Controllers/WinFilterTreeListViewController.vb#L37

If Not String.IsNullOrEmpty(textToSearch) Then
    matchingNode = treeList.FindNode(Function(node)
        Dim currentObject As Object = node.Tag