Getting Started with Blazor Linear Gauge in Blazor WASM App

13 Jul 20268 minutes to read

The Blazor Linear Gauge is an ideal component for visualizing numeric values in a linear scale with features like multiple axes, different orientations, and more.

This section briefly explains how to include the Blazor Linear Gauge component in a Blazor WebAssembly App using Visual Studio, Visual Studio Code, and the .NET CLI.

Create a new Blazor WebAssembly (Standalone) App

Create a Blazor WebAssembly App using Visual Studio via Microsoft Templates or the Blazor Extension.

Run the following command to create a new Blazor WebAssembly App.

dotnet new blazorwasm -o BlazorApp
cd BlazorApp

Alternatively, create a Blazor WebAssembly App using Visual Studio Code via Microsoft Templates or the Blazor Extension, or the C# Dev Kit extension.

Run the following command to create a new Blazor WebAssembly App.

dotnet new blazorwasm -o BlazorApp
cd BlazorApp

Install the required Blazor package

Install the Syncfusion.Blazor.LinearGauge NuGet package. All Syncfusion Blazor packages are available on nuget.org. See the NuGet packages topic for details.

  1. Go to Tools → NuGet Package Manager → Manage NuGet Packages for Solution.
  2. Search the required NuGet package (Syncfusion.Blazor.LinearGauge) and install it.

Alternatively, you can install the same package using the Package Manager Console with the following commands.

Install-Package Syncfusion.Blazor.LinearGauge -Version 34.1.29

Open the terminal and run the following commands.

dotnet add package Syncfusion.Blazor.LinearGauge -v 34.1.29

Open the command prompt and run the following commands.

dotnet add package Syncfusion.Blazor.LinearGauge -v 34.1.29

Add import namespaces

After the package is installed, open the ~/_Imports.razor file and import the Syncfusion.Blazor and Syncfusion.Blazor.LinearGauge namespaces.

@using Syncfusion.Blazor
@using Syncfusion.Blazor.LinearGauge

Register the Blazor service

Open the Program.cs file in Blazor WebAssembly App and register the Blazor service.

....
using Syncfusion.Blazor;
....
builder.Services.AddSyncfusionBlazor();
....

Add script resource

The script can be accessed from NuGet through Static Web Assets. Include the script references in the ~wwwroot/index.html file.

<script src="_content/Syncfusion.Blazor.Core/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>

Add Blazor Linear Gauge component

Open a Razor file located in the ~/Pages/*.razor (for example, Home.razor) and add the Blazor Linear Gauge component inside the razor file.

<SfLinearGauge>
    <LinearGaugeAxes>
        <LinearGaugeAxis>
            <LinearGaugePointers>
                <LinearGaugePointer></LinearGaugePointer>
            </LinearGaugePointers>
        </LinearGaugeAxis>
    </LinearGaugeAxes>
</SfLinearGauge>

Run the application

Press Ctrl+F5 (Windows) or ⌘+F5 (macOS) to launch the application. The Blazor Linear Gauge component will render in your default web browser.

Open the terminal and run the following command.

dotnet run

Open the command prompt and run the following command.

dotnet run
Blazor Linear Gauge Component

Set pointer value

Pointers are used to indicate values on an axis. You can change the pointer value using the PointerValue property in the LinearGaugePointer.

NOTE

In Linear Gauge, you can configure multiple axes. On each axis, you can add a pointer.

<SfLinearGauge>
    <LinearGaugeAxes>
        <LinearGaugeAxis>
            <LinearGaugePointers>
                <LinearGaugePointer PointerValue="40">
                </LinearGaugePointer>
            </LinearGaugePointers>
        </LinearGaugeAxis>
    </LinearGaugeAxes>
</SfLinearGauge>
Blazor Linear Gauge with Pointer Value

Add a title for Blazor Linear Gauge

The title can be added to the linear gauge to provide a piece of quick information to the users about the context of the rendered linear gauge. You can add the title to the linear gauge using Title property in SfLinearGauge.

<SfLinearGauge Title="Linear Gauge">
    <LinearGaugeAxes>
        <LinearGaugeAxis>
            <LinearGaugePointers>
                <LinearGaugePointer></LinearGaugePointer>
            </LinearGaugePointers>
        </LinearGaugeAxis>
    </LinearGaugeAxes>
</SfLinearGauge>
Blazor Linear Gauge with Title

Add ranges in the Blazor Linear Gauge

The range is used to specify a group of scale values in the gauge. You can set the range start and end using Start and End properties in the Linear Gauge Range. You can add any number of ranges for an axis using Linear Gauge Range.

<SfLinearGauge>
    <LinearGaugeAxes>
        <LinearGaugeAxis Minimum="0" Maximum="200">
            <LinearGaugeAxisLabelStyle Format="{value}°C"></LinearGaugeAxisLabelStyle>
            <LinearGaugePointers>
                <LinearGaugePointer PointerValue="140">
                </LinearGaugePointer>
            </LinearGaugePointers>
            <LinearGaugeRanges>
                <LinearGaugeRange Start="0" End="80" Color="#ff5985"></LinearGaugeRange>
                <LinearGaugeRange Start="80" End="120" Color="#ffb133"></LinearGaugeRange>
                <LinearGaugeRange Start="120" End="140" Color="#fcde0b"></LinearGaugeRange>
                <LinearGaugeRange Start="140" End="200" Color="#27d5ff"></LinearGaugeRange>
            </LinearGaugeRanges>
        </LinearGaugeAxis>
    </LinearGaugeAxes>
</SfLinearGauge>
Blazor Linear Gauge with Range Bar

NOTE

View Sample in GitHub.

See also

  1. Getting Started with Blazor for Client-Side in .NET Core CLI
  2. Getting Started with Blazor for Server-Side in Visual Studio
  3. Getting Started with Blazor for Server-Side in .NET Core CLI