Getting Started with Blazor Range Selector (RangeNavigator) Component

25 Mar 202210 minutes to read

This section briefly explains about how to include Blazor Range Selector component in your Blazor Server App and Blazor WebAssembly App using Visual Studio.

Prerequisites

• System requirements for Blazor components

Create a new Blazor App in Visual Studio

You can create Blazor Server App or Blazor WebAssembly App using Visual Studio in one of the following ways,

• Create a Project using Microsoft Templates

• Create a Project using Syncfusion Blazor Extension

Install Syncfusion Blazor RangeNavigator NuGet in the App

Syncfusion Blazor components are available in nuget.org. To use Syncfusion Blazor components in the application, add reference to the corresponding NuGet. Refer to NuGet packages topic for available NuGet packages list with component details.

To add Blazor Range Selector component in the app, open the NuGet package manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), search for Syncfusion.Blazor.RangeNavigator and then install it.

Register Syncfusion Blazor Service

Open ~/_Imports.razor file and import the Syncfusion.Blazor namespace.

~/_Imports.razor

@using Syncfusion.Blazor

Now, register the Syncfusion Blazor Service in the Blazor Server App or Blazor WebAssembly App. Here, Syncfusion Blazor Service is registered by setting IgnoreScriptIsolation property as true to load the scripts externally in the next steps.

From 2022 Vol1 (20.1) version - The default value of IgnoreScriptIsolation is changed as true, so, you don’t have to set IgnoreScriptIsolation property explicitly to refer scripts externally.

Blazor Server App

• For .NET 6 app, open the ~/Program.cs file and register the Syncfusion Blazor Service.

• For .NET 5 and .NET 3.X app, open the ~/Startup.cs file and register the Syncfusion Blazor Service.

.NET 6 (~/Program.cs)

using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using Syncfusion.Blazor;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();
builder.Services.AddSyncfusionBlazor(options => { options.IgnoreScriptIsolation = true; });

var app = builder.Build();
....

.NET 5 and .NET 3.X (~/Startup.cs)

using Syncfusion.Blazor;

namespace BlazorApplication
{
    public class Startup
    {
        ...
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddRazorPages();
            services.AddServerSideBlazor();
            services.AddSyncfusionBlazor(options => { options.IgnoreScriptIsolation = true; });
        }
        ...
    }
}

Blazor WebAssembly App

Open ~/Program.cs file and register the Syncfusion Blazor Service in the client web app.

.NET 6 (~/Program.cs)

using Microsoft.AspNetCore.Components.Web;
using Microsoft.AspNetCore.Components.WebAssembly.Hosting;
using Syncfusion.Blazor;

var builder = WebAssemblyHostBuilder.CreateDefault(args);
builder.RootComponents.Add<App>("#app");
builder.RootComponents.Add<HeadOutlet>("head::after");

builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });

builder.Services.AddSyncfusionBlazor(options => { options.IgnoreScriptIsolation = true; });
await builder.Build().RunAsync();
....

.NET 5 and .NET 3.X (~/Program.cs)

using Syncfusion.Blazor;

namespace WebApplication1
{
    public class Program
    {
        public static async Task Main(string[] args)
        {
            ....
            builder.Services.AddSyncfusionBlazor(options => { options.IgnoreScriptIsolation = true; });
            await builder.Build().RunAsync();
        }
    }
}

Add Style Sheet

Checkout the Blazor Themes topic to learn different ways (Static Web Assets, CDN and CRG) to refer themes in Blazor application, and to have the expected appearance for Syncfusion Blazor components. Here, the theme is referred using Static Web Assets. Refer to Enable static web assets usage topic to use static assets in your project.

To add theme to the app, open the NuGet package manager in Visual Studio (Tools → NuGet Package Manager → Manage NuGet Packages for Solution), search for Syncfusion.Blazor.Themes and then install it. Then, the theme style sheet from NuGet can be referred as follows,

Blazor Server App

• For .NET 6 app, add the Syncfusion bootstrap5 theme in the <head> of the ~/Pages/_Layout.cshtml file.

• For .NET 5 and .NET 3.X app, add the Syncfusion bootstrap5 theme in the <head> of the ~/Pages/_Host.cshtml file.

.NET 6 (~/_Layout.cshtml)

<head>
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
</head>

.NET 5 and .NET 3.X (~/_Host.cshtml)

<head>
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
</head>

Blazor WebAssembly App

For Blazor WebAssembly App, Refer the theme style sheet from NuGet in the <head> of wwwroot/index.html file in the client web app.

~/index.html

<head>
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
</head>

Add Script Reference

Checkout Adding Script Reference topic to learn different ways to add script reference in Blazor Application. In this getting started walk-through, the required scripts are referred using Static Web Assets externally inside the <head> as follows. Refer to Enable static web assets usage topic to use static assets in your project.

Blazor Server App

• For .NET 6 app, Refer script in the <head> of the ~/Pages/_Layout.cshtml file.

• For .NET 5 and .NET 3.X app, Refer script in the <head> of the ~/Pages/_Host.cshtml file.

.NET 6 (~/_Layout.cshtml)

<head>
    ....
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
    <script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
</head>

.NET 5 and .NET 3.X (~/_Host.cshtml)

<head>
    ....
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
    <script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
</head>

Blazor WebAssembly App

For Blazor WebAssembly App, Refer script in the <head> of the ~/index.html file.

~/index.html

<head>
    ....
    <link href="_content/Syncfusion.Blazor.Themes/bootstrap5.css" rel="stylesheet" />
    <script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
</head>

Syncfusion recommends to reference scripts using Static Web Assets, CDN and CRG by disabling JavaScript isolation for better loading performance of the Blazor application.

Add Blazor Range Selector component

• Open ~/_Imports.razor file or any other page under the ~/Pages folder where the component is to be added and import the Syncfusion.Blazor.Charts namespace.

~/Imports.razor

@using Syncfusion.Blazor
@using Syncfusion.Blazor.Charts

• Now, add the Syncfusion Range Selector component in razor file. Here, the Range Selector component is added in the ~/Pages/Index.razor file under the ~/Pages folder.

RAZOR

<SfRangeNavigator>

</SfRangeNavigator>

Populate Range Navigator with Data

To bind the data for the Range Navigator component, assign a IEnumerable object to the DataSource property. It can also be provided as an instance of the DataManager.

RAZOR

@code {
    public class StockPrice
    {
        public DateTime Date { get; set; }
        public double Close { get; set; }
    }
    
    public List<StockPrice> StockDetails = new List<StockPrice>
    {
        new StockPrice { Date = new DateTime(2005, 01, 01), Close = 21 },
        new StockPrice { Date = new DateTime(2006, 01, 01), Close = 24 },
        new StockPrice { Date = new DateTime(2007, 01, 01), Close = 36 },
        new StockPrice { Date = new DateTime(2008, 01, 01), Close = 38 },
        new StockPrice { Date = new DateTime(2009, 01, 01), Close = 54 },
        new StockPrice { Date = new DateTime(2010, 01, 01), Close = 57 },
        new StockPrice { Date = new DateTime(2011, 01, 01), Close = 62 }
    };
}

Now map Date and Close fields from the datasource to XName and YName properties of the RangeNavigatorSeries and then set the StockDetails to DataSource property.

RAZOR

<SfRangeNavigator ValueType="RangeValueType.DateTime" IntervalType="RangeIntervalType.Years" LabelFormat="yyyy">
    <RangeNavigatorSeriesCollection>
        <RangeNavigatorSeries DataSource="@StockDetails" XName="Date" Type="RangeNavigatorType.Area" YName="Close"></RangeNavigatorSeries>
    </RangeNavigatorSeriesCollection>
</SfRangeNavigator>

Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to run the application. Then, the Syncfusion Blazor Range Selector (RangeNavigator) component will be rendered in the default web browser.

View Sample in GitHub.

See also

• Getting Started with Syncfusion Blazor for Client-Side in .NET Core CLI
• Getting Started with Syncfusion Blazor for Server-Side in Visual Studio
• Getting Started with Syncfusion Blazor for Server-Side in .NET Core CLI