TreeList.CollapseAll() Method

Collapses all the nodes in the Tree List.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v19.2.dll

Declaration

C#

public void CollapseAll()

VB.NET

Public Sub CollapseAll

Remarks

This method when called collapses all the nodes which are currently expanded in the Tree List. If only a particular node(s) needs to be collapsed via code set its TreeListNode.Expanded property to false. To expand all nodes in the Tree List use the TreeList.ExpandAll method.

Example:

C#

treeList1.CollapseAll();

VB.NET

TreeList1.CollapseAll()

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the CollapseAll() 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#

how-to-preserve-the-expanded-state-of-treelist-nodes-when-refreshing-data-e864/CS/TreeListViewState.cs#L42

try {
    TreeList.CollapseAll();
    TreeListNode node;

how-to-create-an-analog-of-gridlookupedit-with-treelist-in-a-popup-window-e4319/CS/RepositoryItemTreeListLookUpEdit.cs#L399

{
    treeList.CollapseAll();
    return;

richeditcontrol-event-viewer-t258534/CS/RichEditControlEventViewer/Form1.cs#L146

{
    loggerControl.CollapseAll();
}

how-to-implement-a-service-to-manage-the-process-of-worksheet-cell-calculation-t270403/CS/CustomCalculationServiceExample/Form1.cs#L54

{
    loggingControl.CollapseAll();
}

schedulercontrol-and-schedulerstorage-event-viewer-t444758/CS/SchedulerControlEventViewer/Form1.cs#L145

{
    loggerControl.CollapseAll();
}

VB.NET

how-to-create-an-analog-of-gridlookupedit-with-treelist-in-a-popup-window-e4319/VB/RepositoryItemTreeListLookUpEdit.vb#L403

If text = "" Then
    _TreeList.CollapseAll()
    Return

richeditcontrol-event-viewer-t258534/VB/RichEditControlEventViewer/Form1.vb#L126

Private Sub collapseButtonItem_ItemClick(ByVal sender As Object, ByVal e As DevExpress.XtraBars.ItemClickEventArgs) Handles collapseButtonItem.ItemClick
    loggerControl.CollapseAll()
End Sub

how-to-implement-a-service-to-manage-the-process-of-worksheet-cell-calculation-t270403/VB/CustomCalculationServiceExample/Form1.vb#L48

Private Sub collapseButtonItem_ItemClick(ByVal sender As Object, ByVal e As DevExpress.XtraBars.ItemClickEventArgs) Handles collapseButtonItem.ItemClick
    loggingControl.CollapseAll()
End Sub

schedulercontrol-and-schedulerstorage-event-viewer-t444758/VB/SchedulerControlEventViewer/Form1.vb#L128

Private Sub collapseButtonItem_ItemClick(ByVal sender As Object, ByVal e As DevExpress.XtraBars.ItemClickEventArgs) Handles collapseButtonItem.ItemClick
    loggerControl.CollapseAll()
End Sub

winforms-richedit-document-api-e5219/VB/RichEditAPISample/Form1.vb#L285

    ShowFirstExample("Range")
    treeList1.CollapseAll()
End Sub