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.v24.1.dll

NuGet Package: DevExpress.Web

Declaration

C#

public event FilterControlOperationVisibilityEventHandler FilterControlOperationVisibility

VB.NET

Public Event FilterControlOperationVisibility As FilterControlOperationVisibilityEventHandler

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.

Remarks

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

Note

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