TreeListOptionsBehavior.UnboundColumnExpressionEditorMode Property

Gets or sets the type of unbound expression editor that end-users can utilize to modify expressions for unbound columns owned by this Tree List control.

Namespace: DevExpress.XtraTreeList

Assembly: DevExpress.XtraTreeList.v23.2.dll

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

Declaration

C#

[DefaultValue(ExpressionEditorMode.Default)]
[XtraSerializableProperty]
public virtual ExpressionEditorMode UnboundColumnExpressionEditorMode { get; set; }

VB.NET

<DefaultValue(ExpressionEditorMode.Default)>
<XtraSerializableProperty>
Public Overridable Property UnboundColumnExpressionEditorMode As ExpressionEditorMode

Property Value

Type	Default	Description
ExpressionEditorMode	Default	An ExpressionEditorMode enumeration value that specifies the type of unbound expression editor that end-users can utilize to modify expressions for unbound columns owned by this Tree List control.

Available values:

Name	Description
Default	Editor version depends on the WindowsFormsSettings.DefaultSettingsCompatibilityMode value. If its value is v16 or less, it is the legacy version; otherwise, the new version is used.
Standard	Specifies a legacy version of the Expression editor.
AutoComplete	Specifies a new version of the Expression editor.

Property Paths

You can access this nested property as listed below:

Object Type	Path to UnboundColumnExpressionEditorMode
TreeList	.OptionsBehavior .UnboundColumnExpressionEditorMode

Remarks

If the TreeListColumn.ShowUnboundExpressionMenu setting is enabled, end-users can right-click this unbound column‘s header and click the “Expression Editor…” option.

This will invoke the Unbound Expression Editor dialog, with which end-users can modify an expression used to calculate cell values for this column. The UnboundColumnExpressionEditorMode property specifies the type of this dialog.

• AutoComplete

  The new expression editor that supports auto-completion and syntax highlighting.

  

• Standard

  The legacy expression editor dialog type.

  

• Default

  If the WindowsFormsSettings.DefaultSettingsCompatibilityMode property equals Latest, the new AutoComplete expression editor will be used. Otherwise, if this property is set to v16, the legacy dialog will be invoked instead.

The UnboundColumnExpressionEditorMode property affects the dialog your end-users utilize. However, you will always work with the legacy dialog at design time.

See the Expression Editor article to learn about all differences between the expression editor types.