TreeListColumnCollection.Clear() Method

Removes all elements from the collection.

Namespace : DevExpress.XtraTreeList.Columns

Assembly : DevExpress.XtraTreeList.v25.2.dll

NuGet Packages : DevExpress.Win.Navigation, DevExpress.Win.TreeList

Declaration

C#
VB.NET

csharp

public void Clear()

Public Sub Clear

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Clear() method.

Note

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C#
VB.NET

winforms-dashboard-custom-items-extension/CS/CustomItemExtension/CustomItems/GanttItem/GanttItemControlProvider.cs#L96

csharp

gantt.DataSource = null;
gantt.Columns.Clear();
gantt.TreeListMappings.KeyFieldName = gantt.TreeListMappings.ParentFieldName = gantt.ChartMappings.TextFieldName

winforms-dashboard-custom-items-extension/VB/CustomItemExtension/CustomItems/GanttItem/GanttItemControlProvider.vb#L91

gantt.DataSource = Nothing
gantt.Columns.Clear()
gantt.ChartMappings.FinishDateFieldName = String.Empty