DashboardConfigurator.SetDashboardStateService(IDashboardStateService) Method
Specifies a service that allows you to manage a dashboard state.
Namespace: DevExpress.DashboardWeb
Assembly: DevExpress.Dashboard.v23.2.Web.dll
NuGet Package: DevExpress.Web.Dashboard.Common
Declaration
Parameters
| Name | Type | Description |
|---|---|---|
| service | IDashboardStateService | An object implementing the IDashboardStateService interface that specifies a service allowing you to manage a dashboard state. |
Remarks
Tip
For information on how to use the DashboardConfigurator‘s API, see the following topic: Server-Side API Overview.
For more information about a dashboard state, see the following topic: Manage Dashboard State in ASP.NET MVC Applications.
Examples
How to: Specify a Default Dashboard State
The sample illustrates how to specify a dashboard state (such as master filter or parameter values) in code and how to apply this state when loading a dashboard for the first time. In this example, the DashboardState object holds the required dashboard state. The DashboardConfigurator.SetDashboardStateService method is used to apply the specified dashboard state when loading a dashboard.
Create a custom dashboard state service and define the dashboard state:
using DevExpress.DashboardCommon;
using DevExpress.DashboardWeb;
using System;
using System.Collections.Generic;
namespace MvcDashboard_DefaultDashboardState {
public class CustomDashboardStateService : IDashboardStateService {
public DashboardState GetState(string dashboardId, System.Xml.Linq.XDocument dashboard) {
DashboardState dashboardState = new DashboardState();
DashboardParameterState parameterState =
new DashboardParameterState("countryParameter", "USA", typeof(string));
DashboardItemState gridFilterState = new DashboardItemState("gridDashboardItem1");
gridFilterState.MasterFilterValues.AddRange(new List<object[]>() {
new string[1] { "Andrew Fuller" },
new string[1] { "Laura Callahan" }
}
);
DashboardItemState treemapDrilldownState = new DashboardItemState("treemapDashboardItem1");
treemapDrilldownState.DrillDownValues.Add("Beverages");
DashboardItemState rangeFilterState = new DashboardItemState("rangeFilterDashboardItem1");
rangeFilterState.RangeFilterState.Selection =
new RangeFilterSelection(new DateTime(2015, 1, 1), new DateTime(2016, 1, 1));
dashboardState.Parameters.Add(parameterState);
dashboardState.Items.AddRange(new List<DashboardItemState>() {
gridFilterState,
treemapDrilldownState,
rangeFilterState }
);
return dashboardState;
}
}
}
Call the DashboardConfigurator.SetDashboardStateService(IDashboardStateService) method to apply the created dashboard state service:
using DevExpress.DashboardWeb;
using DevExpress.DashboardWeb.Mvc;
using System.Web.Routing;
namespace MvcDashboard_DefaultDashboardState {
public static class DashboardConfig {
public static void RegisterService(RouteCollection routes) {
routes.MapDashboardRoute("dashboardControl","DefaultDashboard");
DashboardFileStorage dashboardFileStorage = new DashboardFileStorage("~/App_Data/Dashboards");
DashboardConfigurator.Default.SetDashboardStorage(dashboardFileStorage);
DashboardConfigurator.Default.SetDashboardStateService(new CustomDashboardStateService());
}
}
}
How to: Save a Dashboard State to Cookies
The sample illustrates how to save the current ASP.NET MVC Dashboard state (such as master filter or parameter values) to cookies on the client side and restore this state on the server side.
On the server, create a custom dashboard state service so you can load the dashboard state from the cookies:
using DevExpress.DashboardCommon;
using DevExpress.DashboardWeb;
using System.Web;
using System.Xml.Linq;
namespace MvcDashboard_DashboardStateCookies {
internal class CustomDashboardStateService : IDashboardStateService {
public DashboardState GetState(string dashboardId, XDocument dashboard) {
HttpCookie cookie = HttpContext.Current.Request.Cookies["dashboardState"];
if (cookie != null) {
DashboardState dashboardState = new DashboardState();
dashboardState.LoadFromJson(HttpUtility.UrlDecode(cookie.Value));
return dashboardState;
}
else
return null;
}
}
}
Call the DashboardConfigurator.SetDashboardStateService(IDashboardStateService) method to apply the created dashboard state service:
using DevExpress.DashboardWeb;
using DevExpress.DashboardWeb.Mvc;
using System.Web.Routing;
namespace MvcDashboard_DashboardStateCookies {
public static class DashboardConfig {
public static void RegisterService(RouteCollection routes) {
routes.MapDashboardRoute("dashboardControl", "DefaultDashboard");
DashboardFileStorage dashboardFileStorage = new DashboardFileStorage("~/App_Data/Dashboards");
DashboardConfigurator.Default.SetDashboardStorage(dashboardFileStorage);
DashboardConfigurator.Default.SetDashboardStateService(new CustomDashboardStateService());
}
}
}
Handle the DashboardControlOptions.onBeforeRender event to apply the dashboard state changes:
@Html.DevExpress().Dashboard(settings => {
settings.Name = "Dashboard";
settings.ControllerName = "DefaultDashboard";
settings.WorkingMode = DevExpress.DashboardWeb.WorkingMode.ViewerOnly;
settings.Width = Unit.Percentage(100);
settings.Height = Unit.Percentage(100);
settings.ClientSideEvents.BeforeRender = "onBeforeRender";
}).GetHtml()
On the client, the control saves the dashboard state to cookies every time the state changes.
function onBeforeRender(sender) {
const dashboardControl = sender.GetDashboardControl();
if (dashboardControl)
dashboardControl.on('dashboardStateChanged', onDashboardStateChanged);
}
function onDashboardStateChanged(e) {
// Set the number of days until the cookie should expire (exdays):
const exdays = 1;
const date = new Date();
date.setTime(date.getTime() + (exdays * 24 * 60 * 60 * 1000));
let expires = "expires=" + date.toUTCString();
// Get the dashboard state:
let dState = "dashboardState=" + e.component.getDashboardState() + ";";
// Assign the cookie name (dashboardState), the cookie value, and the expires string to document.cookie:
document.cookie = dState + expires + ";path=/";
}
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the SetDashboardStateService(IDashboardStateService) method.
Note
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