FocusedColumnChangedEventArgs.OldColumn Property

Gets the previously focused column.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v19.1.dll

Declaration

C#

public TreeListColumn OldColumn { get; }

VB.NET

Public ReadOnly Property OldColumn As TreeListColumn

Property Value

Type	Description
TreeListColumn	A TreeListColumn object representing the previously focused column. null (Nothing in Visual Basic) if none of the columns was previously focused.

Remarks

You can obtain the currently focused column via the ColumnChangedEventArgs.Column property. This property returns null (Nothing in Visual Basic) if none of the columns is currently focused.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the OldColumn property.

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-add-a-horizontal-cells-merge-capability-to-an-xtratreelist-control-e2501/CS/TreeListCellMerging/MyTreeList.cs#L48

{
    if(e.OldColumn == null || e.Column == null) return;
    ReturnIfBeyondRightBorder(e);

how-to-print-a-treelist-that-supports-the-horizontal-cell-merging-capability-e4344/CS/TreeListCellMerging/MyTreeList.cs#L49

{
    if(e.OldColumn == null || e.Column == null) return;
    ReturnIfBeyondRightBorder(e);

VB.NET

how-to-add-a-horizontal-cells-merge-capability-to-an-xtratreelist-control-e2501/VB/TreeListCellMerging/MyTreeList.vb#L42

Private Sub MyTreeList_FocusedColumnChanged(ByVal sender As Object, ByVal e As FocusedColumnChangedEventArgs)
    If e.OldColumn Is Nothing OrElse e.Column Is Nothing Then
        Return

how-to-print-a-treelist-that-supports-the-horizontal-cell-merging-capability-e4344/VB/TreeListCellMerging/MyTreeList.vb#L43

Private Sub MyTreeList_FocusedColumnChanged(ByVal sender As Object, ByVal e As FocusedColumnChangedEventArgs)
    If e.OldColumn Is Nothing OrElse e.Column Is Nothing Then
        Return