TreeList.ShowUnboundExpressionEditor(TreeListColumn) Method

Invokes an Expression Editor that enables editing an expression for the specified unbound column.

Assembly : DevExpress.XtraTreeList.v25.2.dll

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

Declaration

C#
VB.NET

csharp

public virtual void ShowUnboundExpressionEditor(
    TreeListColumn column
)

Public Overridable Sub ShowUnboundExpressionEditor(
    column As TreeListColumn
)

Parameters

Name	Type	Description
column	TreeListColumn

A TreeListColumn that represents an unbound column whose expression will be edited in the Expression Editor.

Remarks

At runtime, an end-user can edit expressions for unbound columns via an Expression Editor modal form. This editor can be opened:

via a context menu, if the TreeListColumn.ShowUnboundExpressionMenu option is enabled;
by calling the ShowUnboundExpressionEditor method.

The TreeList.UnboundExpressionEditorCreated event fires in response to creating the Expression Editor. You can handle this event to prevent the editor from being displayed in specific instances, change the editor form’s settings, etc.