Events

The ProgressBar for Xamarin exposes the following events:

• ProgressChanged event is raised when progress is changed. The ProgressChanged event handler receives two parameters:

  • A ProgressChangedEventArgs which has a Progress(double) property. Using this property you can get the current progress of the ProgressBar control.

• ProgressCompleted event is raised when the Value of the ProgressBar reaches the Maximum value.

Example with ProgressChanged and ProgressCompleted events

The snippet below shows a simple RadLinearProgressBar definition:

• XAML

<StackLayout Margin="20" 
             HorizontalOptions="FillAndExpand" 
             VerticalOptions="FillAndExpand" 
             Spacing="20">
    <StackLayout Orientation="Horizontal">
        <Label Text="{Binding Value, Source={x:Reference progressBar}}" 
               VerticalTextAlignment="Center"/>
        <Stepper Minimum="0" 
                 Maximum="180" 
                 Increment="20" 
                 Value="{Binding Value, Source={x:Reference progressBar}}"/>
    </StackLayout>
    <StackLayout Orientation="Horizontal">
        <Label Text="Events: "/>
        <Label x:Name="statusLabel"/>
    </StackLayout>
    <telerikPrimitives:RadLinearProgressBar x:Name="progressBar"
                                            Minimum="0"
                                            Maximum="180"
                                            Value="20"
                                            ProgressChanged="OnProgressChanged"
                                            ProgressCompleted="OnProgressCompleted"/>
</StackLayout>

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

• XAML

xmlns:telerikPrimitives="clr-namespace:Telerik.XamarinForms.Primitives;assembly=Telerik.XamarinForms.Primitives"

ProgressChanged event in code behind. The Label text is updated with the current Progress value:

• C#

private void OnProgressChanged(object sender, Telerik.XamarinForms.Primitives.ProgressBar.ProgressChangedEventArgs e)
{
    this.statusLabel.Text = e.Progress.ToString();
}

ProgressCompleted event in code behind. The Label text is updated with Text = "Completed" when the progress reaches the Maximum value:

• C#

private void OnProgressCompleted(object sender, EventArgs e)
{
    this.statusLabel.Text = "Completed";
}

The final result when using the ProgressChanged and ProgressCompleted events:

A sample Events example can be found in the ProgressBar/Events folder of the SDK Samples Browser application.