.NET MAUI CircularSlider Events

Updated on Aug 11, 2026

The Telerik UI for .NET MAUI CircularSlider component exposes a ValueChanging event which is raised when the end user drags the thumb or touches the range track. You can use this event to plug custom logic by changing the Value property.

The ValueChanging event handler receives two parameters:

• The sender argument, which is of type object, but can be cast to the RadCircularSlider type.
• A Telerik.Maui.ValueChangingEventArgs object, which provides the Value property of the CircularSlider.

The following example demonstrates how to use the ValueChanging event to prevent dragging the thumb to a smaller value:

1. Define the CircularSlider:

XAML

<telerik:RadCircularSlider Grid.Row="0"
                           Minimum="0"
                           Maximum="100"
                           Value="35"
                           ValueChanging="OnValueChanging"
                           HorizontalOptions="Fill"
                           MinimumHeightRequest="300" />

2. Add the event handler:

C#

private void OnValueChanging(object sender, ValueChangingEventArgs e)
{
    // Snap the value to the nearest multiple of 5 while dragging.
    e.Value = System.Math.Round(e.Value / 5) * 5;

    this.valueLabel.Text = $"Value: {e.Value:N0}";
}

3. Add the telerik namespace:

XAML

xmlns:telerik="http://schemas.telerik.com/2022/xaml/maui"

This is the result:

For a runnable example demonstrating the CircularSlider value changing event, see the SDKBrowser Demo Application and go to the CircularSlider > Events category.

See Also

• Value Thumb
• Range Track