Add a Web Dashboard to a Blazor Server Application
- 3 minutes to read
This topic describes how to add the DxDashboard component to a Blazor Server application. The Dashboard component wraps the JavaScript DashboardControl and uses an ASP.NET Core backend with the Dashboard Controller to handle client data requests.
You can also download the example:
Install the NuGet Packages
Install the following NuGet packages in your project:
DevExpress.AspNetCore.DashboardDevExpress.Blazor.Dashboard
Add a Dashboard Controller
Add a new empty DefaultDashboard controller and derive it from the DashboardController class:
using DevExpress.DashboardAspNetCore;
using DevExpress.DashboardWeb;
using Microsoft.AspNetCore.DataProtection;
namespace BlazorDashboardApp {
public class DefaultDashboardController : DashboardController {
public DefaultDashboardController(DashboardConfigurator configurator, IDataProtectionProvider? dataProtectionProvider = null)
: base(configurator, dataProtectionProvider) {
}
}
}
Register the Dashboard Configurator
The configurator allows you to define dashboard storage, data source storage, and connection strings provider.
Register the DashboardConfigurator as a service based on your requirements. The AddSingleton method registers the DashboardConfigurator service with the same service lifetime as AddDefaultDashboardController. However, we recommend that you use the AddScoped method as it can be used in more cases (for example, security-based scenarios like multi-tenancy dashboards).
The code snippet below shows how to register the DashboardConfigurator as a scoped service.
using DevExpress.DashboardAspNetCore;
using DevExpress.DashboardCommon;
using DevExpress.DashboardWeb;
using Microsoft.Extensions.FileProviders;
var builder = WebApplication.CreateBuilder(args);
IFileProvider fileProvider = builder.Environment.ContentRootFileProvider;
IConfiguration configuration = builder.Configuration;
// Add services to the container.
builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();
builder.Services.AddScoped<DashboardConfigurator>((IServiceProvider serviceProvider) => {
DashboardConfigurator configurator = new DashboardConfigurator();
configurator.SetDashboardStorage(new DashboardFileStorage(fileProvider.GetFileInfo("Data/Dashboards").PhysicalPath));
DataSourceInMemoryStorage dataSourceStorage = new DataSourceInMemoryStorage();
configurator.SetDataSourceStorage(dataSourceStorage);
return configurator;
});
Note
You can also create a folder to store dashboards in a file system: Prepare Dashboard Storage.
In the same file, add the RouteBuilderExtension.MapDashboardRoute() method call. Set api/dashboard as a route prefix and pass the name of the custom dashboard controller (DefaultDashboard):
using DevExpress.DashboardAspNetCore;
// ...
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.MapDashboardRoute("api/dashboard", "DefaultDashboard");
app.MapBlazorHub();
app.MapFallbackToPage("/_Host");
app.Run();
Add Stylesheets
In the Pages folder, open the _Layout.cshtml file and reference the following stylesheets:
<head>
<!-- ... -->
<link href="_content/DevExpress.Blazor.Dashboard/ace.css" rel="stylesheet" />
<link href="_content/DevExpress.Blazor.Dashboard/ace-theme-dreamweaver.css" rel="stylesheet" />
<link href="_content/DevExpress.Blazor.Dashboard/ace-theme-ambiance.css" rel="stylesheet" />
<link href="_content/DevExpress.Blazor.Dashboard/dx.light.css" rel="stylesheet" />
<link href="_content/DevExpress.Blazor.Dashboard/dx-analytics.common.css" rel="stylesheet" />
<link href="_content/DevExpress.Blazor.Dashboard/dx-analytics.light.css" rel="stylesheet" />
<link href="_content/DevExpress.Blazor.Dashboard/dx-querybuilder.css" rel="stylesheet" />
<link href="_content/DevExpress.Blazor.Dashboard/dx-dashboard.light.min.css" rel="stylesheet" />
<!-- ... -->
</head>
Add References
Reference the DevExpress.DashboardBlazor and DevExpress.DashboardWeb namespaces. For example, you can do this in the _Imports.razor file alongside with the existing references:
...
@using DevExpress.DashboardBlazor
@using DevExpress.DashboardWeb
Add the Dashboard Component
Add the code below to a Razor page to render the Web Dashboard. Specify the same endpoint as in the RouteBuilderExtension.MapDashboardRoute method call:
@page "/dashboard"
<DxDashboard Endpoint="api/dashboard" style="width: 100%; height: 800px;">
</DxDashboard>
See the following topic for information on how to configure the Dashboard component: Property Binding in Blazor.
Next Steps
You can do the following to prepare the control for first use:
- Prepare dashboard storage.
- Provide a set of default data sources that are available to users.
- Add a set of predefined data connections.
- Specify whether Web Dashboard acts as the Designer or Viewer.