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ASPxTreeList.FilterControlOperationVisibility Event

Enables you to dynamically hide operation items (such as the Equals, Contains, etc.) of the filter control’s operation dropdown menu.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v23.2.dll

NuGet Package: DevExpress.Web


public event FilterControlOperationVisibilityEventHandler FilterControlOperationVisibility

Event Data

The FilterControlOperationVisibility event's data class is FilterControlOperationVisibilityEventArgs. The following properties provide information specific to this event:

Property Description
CustomFunctionName Gets a custom filter function name.
FunctionType Gets a function-based comparison operator type.
Operation Gets the comparison operator type.
PropertyInfo Gets the filterable property of the filter expression.
Visible Gets or sets a value specifying whether the filter operation is visible.


The FilterControlOperationVisibility event is raised for each comparison operator, and allows you to dynamically control its visibility.


Online Demos Refer to the Tree List - Filter Control online demo to review how to filter Tree List data nodes using the Filter Control.

See Also