ProgressBar Class

Definition

Namespace:

Microsoft.UI.Xaml.Controls

Represents a control that indicates the progress of an operation.

This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).

/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.ContractVersion(Microsoft.UI.Xaml.XamlContract, 65536)]
class ProgressBar : RangeBase

[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.ContractVersion(typeof(Microsoft.UI.Xaml.XamlContract), 65536)]
public class ProgressBar : RangeBase

Public Class ProgressBar
Inherits RangeBase

Inheritance

RangeBase

ProgressBar

Attributes

MarshalingBehaviorAttribute ThreadingAttribute ContractVersionAttribute

Examples

Tip

For more info, design guidance, and code examples, see Progress controls.

Open the WinUI 2 Gallery app and see the ProgressBar in action.

The WinUI 2 Gallery app includes interactive examples of most WinUI 2 controls, features, and functionality. Get the app from the Microsoft Store or get the source code on GitHub.

The following shows how to set up an indeterminate ProgressBar and a basic determinate ProgressBar where the value is dependent on a RepeatButton click.

<!-- xmlns:muxc="using:Microsoft.UI.Xaml.Controls" -->

<StackPanel x:Name="LayoutRoot">
    <StackPanel BorderThickness="4" BorderBrush="Black" Padding="12">
        <TextBlock Text="Indeterminate Progress Bar"/>
        <muxc:ProgressBar IsIndeterminate="True" Margin="0,12"/>
    </StackPanel>
    <StackPanel BorderBrush="Black" BorderThickness="4" Padding="12">
        <TextBlock Text="Value-Based Progress Bar"/>
        <muxc:ProgressBar x:Name="progressBar1" Value="0" Maximum="200" Margin="0,12"/>
        <RepeatButton Content="Press and hold" Click="RepeatButton_Click"/>
    </StackPanel>
</StackPanel>

private static int _clicks = 0;

private void RepeatButton_Click(object sender, RoutedEventArgs e)
{
    _clicks += 1;
    progressBar1.Value = _clicks;
    if (_clicks >= progressBar1.Maximum) _clicks = 0;
}

Remarks

A ProgressBar control visually indicates progress of an operation with one of two styles: a bar that displays a repeating pattern, or a bar that fills based on a value.

The IsIndeterminate property determines the appearance of a ProgressBar.

• Set IsIndeterminate to true to display a repeating pattern. An alternative control to use for indeterminate progress is a ProgressRing.
• Set IsIndeterminate to false to fill the bar based on a value. (This is the default.) When IsIndeterminate is false, you specify the range with the Minimum and Maximum properties. By default Minimum is 0 and Maximum is 100. To specify the progress value, you set the Value property.

Control style and template

You can modify the default Style and ControlTemplate to give the control a unique appearance. For information about modifying a control's style and template, see XAML styles. The default style, template, and resources that define the look of the control are included in the generic.xaml file. For design purposes, generic.xaml is installed with the WinUI (Microsoft.UI.Xaml) NuGet package. By default, this location is \Users\<username>\.nuget\packages\microsoft.ui.xaml\<version>\lib\uap10.0\Microsoft.UI.Xaml\Themes\generic.xaml. Styles and resources from different versions of WinUI might have different values.

XAML also includes resources that you can use to modify the colors of a control in different visual states without modifying the control template (modifying these resources is preferred to setting properties). For more info, see the Light-weight styling section of the XAML styles article.

Constructors

ProgressBar()

Initializes a new instance of the ProgressBar class. This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).

Properties

IsIndeterminate	Gets or sets a value that indicates whether the progress bar reports generic progress with a repeating pattern or reports progress based on the Value property. This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).
IsIndeterminateProperty	Identifies the IsIndeterminate dependency property. This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).
ShowError	Gets or sets a value that indicates whether the progress bar should use visual states that communicate an Error state to the user. This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).
ShowErrorProperty	Identifies the ShowError dependency property. This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).
ShowPaused	Gets or sets a value that indicates whether the progress bar should use visual states that communicate a Paused state to the user. This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).
ShowPausedProperty	Identifies the ShowPaused dependency property. This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).
TemplateSettings	Gets an object that provides calculated values that can be referenced as TemplateBinding sources when defining templates for a ProgressBar control. This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).

See also

• ProgressRing
• Progress controls