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How to: Access API of Underlying Widgets in the ASP.NET MVC Dashboard Extension

  • 4 min to read

This example demonstrates how to customize client widgets used to visualize data within dashboard items at runtime using ASPxClientDashboard's API.

The following options are changed.

  • Highlighting of the hovered grid row is enabled in the underlying dxDataGrid in the ASPxClientDashboard.ItemWidgetCreated event handler.
  • A standard tooltip that is invoked when an end-user hovers over a chart series point is disabled. You can invoke a tooltip by clicking the required label on the argument axis. The argumentAxisClick event is used for this purpose. Subscription and unsubscription to/from the argumentAxisClick event are performed in the ASPxClientDashboard.ItemWidgetUpdated and ASPxClientDashboard.ItemWidgetUpdating event handlers respectively.
  • A pie legend is shown for the underlying dxPieChart.
using DevExpress.DashboardWeb;
using DevExpress.DashboardWeb.Mvc;
using System;
using System.Web.Mvc;
using System.Web.Routing;

namespace MVCxDashboard_UnderlyingWidgets
    public class MvcApplication : System.Web.HttpApplication
        public static void RegisterRoutes(RouteCollection routes)

                new { controller = "Home", action = "Index", id = UrlParameter.Optional }

        protected void Application_Start()
            ModelBinders.Binders.DefaultBinder = new DevExpress.Web.Mvc.DevExpressEditorsBinder();
            DevExpress.Web.ASPxWebControl.CallbackError += Application_Error;

            DashboardConfigurator.Default.SetDashboardStorage(new DashboardFileStorage(@"~/App_Data/"));

        protected void Application_Error(object sender, EventArgs e)
            Exception exception = System.Web.HttpContext.Current.Server.GetLastError();