Getting Started with .NET MAUI Linear Gauge

26 Sep 202411 minutes to read

This section explains the steps required to add the .NET MAUI Linear Gauge control and its elements such as scale, range, and pointer. This section covers only basic features needed to get started with Syncfusion linear gauge control. Follow the steps below to add a .NET MAUI Linear gauge control to your project.

To get start quickly with our .NET MAUI Linear Gauge, you can check the below video.

Prerequisites

Before proceeding, ensure the following are set up:

  1. Install .NET 7 SDK or later is installed.
  2. Set up a .NET MAUI environment with Visual Studio 2022 (v17.3 or later) or Visual Studio Code. For Visual Studio Code users, ensure that the .NET MAUI workload is installed and configured as described here.

Step 1: Create a New .NET MAUI Project

Visual Studio

  1. Go to File > New > Project and choose the .NET MAUI App template.
  2. Name the project and choose a location. Then click Next.
  3. Select the .NET framework version and click Create.

Visual Studio Code

  1. Open the command palette by pressing Ctrl+Shift+P and type .NET:New Project and enter.
  2. Choose the .NET MAUI App template.
  3. Select the project location, type the project name and press Enter.
  4. Then choose Create project.

Step 2: Install the Syncfusion .NET MAUI Gauges NuGet Package

  1. In Solution Explorer, right-click the project and choose Manage NuGet Packages.
  2. Search for Syncfusion.Maui.Gauges and install the latest version.
  3. Ensure the necessary dependencies are installed correctly, and the project is restored.

Step 3: Register the handler

The Syncfusion.Maui.Core NuGet is a dependent package for all Syncfusion controls of .NET MAUI. In the MauiProgram.cs file, register the handler for Syncfusion core.

using Syncfusion.Maui.Core.Hosting;
namespace GettingStarted
{
    public static class MauiProgram
    {
        public static MauiApp CreateMauiApp()
        {
            var builder = MauiApp.CreateBuilder();

            builder.ConfigureSyncfusionCore();
            builder
            .UseMauiApp<App>()
            .ConfigureFonts(fonts =>
            {
                fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
            });

            return builder.Build();
        }
    }
}

Step 4: Add .NET MAUI Linear gauge control

  1. To initialize the control, import the Syncfusion.Maui.Gauges namespace into your code.
  2. Initialize SfLinearGauge.
<ContentPage   
    . . .
    xmlns:gauge="clr-namespace:Syncfusion.Maui.Gauges;assembly=Syncfusion.Maui.Gauges">

    <gauge:SfLinearGauge />

</ContentPage>
using Syncfusion.Maui.Gauges;
. . .

public partial class MainPage : ContentPage
{
    public MainPage()
    {
        InitializeComponent();
        SfLinearGauge gauge = new SfLinearGauge();
        this.Content = gauge;
    }
}

Add range to the linear gauge

Ranges contain a list of range elements, to which you can add any number of ranges inside the scale. You can specify the start value, end value, and background color for range using the StartValue, EndValue, and Fill properties as shown in the following code sample.

<gauge:SfLinearGauge>
                <gauge:SfLinearGauge.Ranges>
                    <gauge:LinearRange/>
                </gauge:SfLinearGauge.Ranges>
            </gauge:SfLinearGauge>
SfLinearGauge gauge = new SfLinearGauge();
        LinearRange range = new LinearRange();
        gauge.Ranges.Add(range);
        this.Content = gauge;

.NET MAUI Linear Gauge with Range

Add pointer to the linear gauge

Pointers contain a list of pointer elements, in which you can add any number of gauge pointers such as BarPointer, ShapePointer, and ContentPointer inside the scale to indicate the value.

<gauge:SfLinearGauge>
                ..
                 <gauge:SfLinearGauge.MarkerPointers>

                    <gauge:LinearShapePointer Value="70"/>

                    <gauge:LinearContentPointer Value="80">
                        <gauge:LinearContentPointer.Content>
                            <Image Source="pin.png" HeightRequest="20" 
                                   WidthRequest="20"/>
                        </gauge:LinearContentPointer.Content>
                    </gauge:LinearContentPointer>
                </gauge:SfLinearGauge.MarkerPointers>

                <gauge:SfLinearGauge.BarPointers>
                    <gauge:BarPointer Value="60"/>
                </gauge:SfLinearGauge.BarPointers>

            </gauge:SfLinearGauge>
SfLinearGauge gauge = new SfLinearGauge();
        ...

        LinearShapePointer shapePointer = new LinearShapePointer();
        shapePointer.Value = 70;
        gauge.MarkerPointers.Add(shapePointer);

        LinearContentPointer contentPointer = new LinearContentPointer();
        contentPointer.Value = 80;
        contentPointer.Content = new Image() { Source = "pin.png", HeightRequest = 20, WidthRequest = 20 };
        gauge.MarkerPointers.Add(contentPointer);

        BarPointer barPointer = new BarPointer();
        barPointer.Value = 60;
        gauge.BarPointers.Add(barPointer);
        this.Content = gauge;

.NET MAUI Linear Gauge with Pointer

The following code example gives you the complete code of above configurations.

<gauge:SfLinearGauge x:Name="gauge" >
                <gauge:SfLinearGauge.Ranges>
                    <gauge:LinearRange/>
                </gauge:SfLinearGauge.Ranges>

                <gauge:SfLinearGauge.MarkerPointers>
                    <gauge:LinearShapePointer Value="70"/>

                    <gauge:LinearContentPointer Value="80">
                        <gauge:LinearContentPointer.Content>
                            <Image Source="pin.png" HeightRequest="20" 
                                   WidthRequest="20"/>
                        </gauge:LinearContentPointer.Content>
                    </gauge:LinearContentPointer>
                </gauge:SfLinearGauge.MarkerPointers>

                <gauge:SfLinearGauge.BarPointers>
                    <gauge:BarPointer Value = "60"/>
                </gauge:SfLinearGauge.BarPointers>
            </gauge:SfLinearGauge>
SfLinearGauge gauge = new SfLinearGauge();
        
        LinearRange range = new LinearRange();
        gauge.Ranges.Add(range);
        
        LinearShapePointer shapePointer = new LinearShapePointer();
        shapePointer.Value = 70;
        gauge.MarkerPointers.Add(shapePointer);

        LinearContentPointer contentPointer = new LinearContentPointer();
        contentPointer.Value = 80;
        contentPointer.Content = new Image() { Source = "pin.png", HeightRequest = 20, WidthRequest = 20 };
        gauge.MarkerPointers.Add(contentPointer);

        BarPointer barPointer = new BarPointer();
        barPointer.Value = 60;
        gauge.BarPointers.Add(barPointer);

        this.Content = gauge;

.NET MAUI Linear Gauge

NOTE

View sample in GitHub

NOTE

You can refer to our .NET MAUI Linear Gauge feature tour page for its groundbreaking feature representations. You can also explore our .NET MAUI Linear Gauge Example that shows you how to render the Linear Gauge in .NET MAUI.