Getting Started

This article will guide you through the steps needed to add a basic RadGauge control in your application.

1. Setting up the app

Take a look at these articles and follow the instructions to setup your app:

2. Adding the required Telerik references

You have two options:

  • Add the Telerik UI for Xamarin Nuget packages following the instructions in Telerik NuGet package server topic.

  • Add the references to Telerik assemblies manually, check the list below with the required assemblies for RadGauge component:

Platform Assemblies
Portable Telerik.XamarinForms.Common.dll
Telerik.XamarinForms.DataVisualization.dll
Telerik.XamarinForms.SkiaSharp.dll
Android Telerik.Xamarin.Android.Common.dll
Telerik.XamarinForms.Common.dll
Telerik.XamarinForms.DataVisualization.dll
Telerik.XamarinForms.SkiaSharp.dll
iOS Telerik.XamarinForms.Common.dll
Telerik.XamarinForms.DataVisualization.dll
Telerik.XamarinForms.SkiaSharp.dll
UWP Telerik.XamarinForms.Common.dll
Telerik.XamarinForms.DataVisualization.dll
Telerik.XamarinForms.SkiaSharp.dll

3. Adding RadGauge control

You could use one of the following approaches:

Drag the control from the Toolbox.

Take a look at the following topics on how to use the toolbox:

Create the control definition in XAML or C#.

The snippet below shows a simple RadGauge definition:

<telerikGauges:RadRadialGauge x:Name="gauge">
    <telerikGauges:RadRadialGauge.Axis>
        <telerikGauges:GaugeLinearAxis Maximum="200"
                                       Minimum="0"
                                       Step="25" />
    </telerikGauges:RadRadialGauge.Axis>
    <telerikGauges:RadRadialGauge.Indicators>
        <telerikGauges:GaugeNeedleIndicator Offset="30" Value="60" />
        <telerikGauges:GaugeShapeIndicator Value="80" />
    </telerikGauges:RadRadialGauge.Indicators>
    <telerikGauges:RadRadialGauge.Ranges>
        <telerikGauges:GaugeRangesDefinition>
            <telerikGauges:GaugeRange Color="Green"
                                      From="0"
                                      To="150" />
            <telerikGauges:GaugeGradientRange From="150" To="200">
                <telerikCommon:RadGradientStop Offset="150" Color="Yellow" />
                <telerikCommon:RadGradientStop Offset="200" Color="Red" />
            </telerikGauges:GaugeGradientRange>
        </telerikGauges:GaugeRangesDefinition>
    </telerikGauges:RadRadialGauge.Ranges>
</telerikGauges:RadRadialGauge>
RadRadialGauge gauge = new RadRadialGauge();
gauge.Axis = new GaugeLinearAxis { Minimum = 0, Maximum = 200, Step = 25 };
gauge.Indicators.Add(new GaugeNeedleIndicator { Value = 60, Offset = 30, });
gauge.Indicators.Add(new GaugeShapeIndicator { Value = 80 });
gauge.Ranges.Ranges.Add(new GaugeRange { From = 0, To = 150, Color = Color.Green });
GaugeGradientRange gradientRange = new GaugeGradientRange { From = 150, To = 200 };
gradientRange.GradientStops.Add(new RadGradientStop { Color = Color.Yellow, Offset = 150 });
gradientRange.GradientStops.Add(new RadGradientStop { Color = Color.Red, Offset = 200 });
gauge.Ranges.Ranges.Add(gradientRange);

In addition to this, you need to add the following namespace:

xmlns:telerikCommon="clr-namespace:Telerik.XamarinForms.Common;assembly=Telerik.XamarinForms.Common"
xmlns:telerikGauges="clr-namespace:Telerik.XamarinForms.DataVisualization.Gauges;assembly=Telerik.XamarinForms.DataVisualization"
using Telerik.XamarinForms.Common;
using Telerik.XamarinForms.DataVisualization.Gauges;

This is the result:

Gauge example

You can follow this tutorial to set up also the RadVerticalGauge and RadHorizontalGauge controls which expose the same API.

Gauge types

There are 2 gauge types that you can use to display different layout - radial and linear (horizontal and vertical). You can read more about these types at the listed articled below:

SDK Browser and QSF applications contain different examples that show Gauges' main features. You can find the applications in the Examples and QSF folders of your local Telerik UI for Xamarin installation.

See Also

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