Getting started with Blazor Linear Gauge in Blazor Web App
14 Jul 20269 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 your Blazor Web App using Visual Studio, Visual Studio Code, and the .NET CLI.
Create a new Blazor Web App
Create a Blazor Web App using Visual Studio via Microsoft Templates or the Blazor Extension.
Run the following command to create a new Blazor Web App.
dotnet new blazor -o BlazorWebApp --interactivity Auto
cd BlazorWebApp
cd BlazorWebApp.ClientAlternatively, create a Blazor Web App using Visual Studio Code via Microsoft Templates, the Blazor Extension, or the C# Dev Kit extension.
Run the following command to create a new Blazor Web App.
dotnet new blazor -o BlazorWebApp --interactivity Auto
cd BlazorWebApp
cd BlazorWebApp.ClientNOTE
Configure the appropriate Interactive render mode and Interactivity location while creating a Blazor Web App. For detailed information, refer to the interactive render mode documentation.
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. If using the WebAssembly or Auto render modes in the Blazor Web App, install this package in the .Client project.
- Go to Tools → NuGet Package Manager → Manage NuGet Packages for Solution.
- 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 34.1.29Open the terminal and run the following commands.
dotnet add package Syncfusion.Blazor.LinearGauge -v 34.1.29Open the command prompt and run the following commands.
dotnet add package Syncfusion.Blazor.LinearGauge -v 34.1.29Add import namespaces
After the package is installed, open the ~/_Imports.razor file in the .Client project and import the Syncfusion.Blazor and Syncfusion.Blazor.LinearGauge namespaces.
@using Syncfusion.Blazor
@using Syncfusion.Blazor.LinearGaugeRegister the Blazor service
Open the Program.cs file in Blazor Web App and register the Blazor service. If the Interactive Render Mode is set to WebAssembly or Auto, register the Blazor service in Program.cs files of both the server and client projects in your Blazor Web App.
....
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 ~/Components/App.razor 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 .Client project razor file.
NOTE
If the interactivity location is set to
Per page/componentin the Web App, define a render mode at the top of the razor file. (For example,InteractiveServer,InteractiveWebAssembly, orInteractiveAuto). If the Interactivity is set toGlobalwithAutoorWebAssembly, the render mode is automatically configured in theApp.razorfile by default.
@rendermode InteractiveAuto
@using Syncfusion.Blazor.LinearGauge
<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 navigate to the main project folder (for example, BlazorWebApp) and run the following command.
cd ..
cd BlazorWebApp
dotnet runOpen the command prompt and navigate to the main project folder (for example, BlazorWebApp) and run the following command.
cd ..
cd BlazorWebApp
dotnet run
NOTE
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>
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>
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 LinearGaugeRange. You can add any number of ranges for an axis using LinearGaugeRange.
<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>