Displaying only one action from an action category in a detail view

Hello Hans,

You can hide unnecessary actions from an ActionContainerViewItem using the ActionControlsSiteController.CustomizeContainerActions and FillActionContainersController.CustomizeContainerActions events. Here is an example:

C#
using DevExpress.ExpressApp;  
using DevExpress.ExpressApp.Actions;  
using DevExpress.ExpressApp.SystemModule;  
using DevExpress.ExpressApp.Editors;  
using System.Collections.Generic;  
using System.Linq;  

namespace MainDemo.Module.Win {  
    public class ActionLocationController : Controller {  
        protected override void OnActivated() {  
            base.OnActivated();  
            Frame.GetController<ActionControlsSiteController>().CustomizeContainerActions += ActionLocationController_CustomizeContainerActions;  
            Frame.GetController<FillActionContainersController>().CustomizeContainerActions += ActionLocationController_CustomizeContainerActions;  
        }  
        void ActionLocationController_CustomizeContainerActions(object sender, DevExpress.ExpressApp.SystemModule.CustomizeContainerActionsEventArgs e) {  
            if (e.Category == "Edit" && e.Container is ActionContainerViewItem) {  
                List<ActionBase> actionsToRemove = e.ContainerActions.Where(a => a.Id != "Action1").ToList();  
                foreach (ActionBase action in actionsToRemove) {  
                    e.ContainerActions.Remove(action);  
                }  
            }  
        }  
        protected override void OnDeactivated() {  
            base.OnDeactivated();  
            Frame.GetController<ActionControlsSiteController>().CustomizeContainerActions -= ActionLocationController_CustomizeContainerActions;  
            Frame.GetController<FillActionContainersController>().CustomizeContainerActions -= ActionLocationController_CustomizeContainerActions;  
        }  
    }  
}  

Refer to the ActionControlsSiteController.CustomizeContainerActions Event topic for additional information.