ScrollBar Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Represents a control that provides a scroll bar that has a sliding Thumb whose position corresponds to a value.
Inheritance Hierarchy
System..::.Object
System.Windows..::.DependencyObject
System.Windows..::.UIElement
System.Windows..::.FrameworkElement
System.Windows.Controls..::.Control
System.Windows.Controls.Primitives..::.RangeBase
System.Windows.Controls.Primitives..::.ScrollBar
Namespace: System.Windows.Controls.Primitives
Assembly: System.Windows (in System.Windows.dll)
XMLNS for XAML: Not mapped to an xmlns.
Syntax
<TemplatePartAttribute(Name := "HorizontalSmallIncrease", Type := GetType(RepeatButton))> _
<TemplatePartAttribute(Name := "HorizontalRoot", Type := GetType(FrameworkElement))> _
<TemplatePartAttribute(Name := "HorizontalLargeIncrease", Type := GetType(RepeatButton))> _
<TemplatePartAttribute(Name := "HorizontalLargeDecrease", Type := GetType(RepeatButton))> _
<TemplatePartAttribute(Name := "HorizontalSmallDecrease", Type := GetType(RepeatButton))> _
<TemplatePartAttribute(Name := "VerticalSmallIncrease", Type := GetType(RepeatButton))> _
<TemplateVisualStateAttribute(Name := "Disabled", GroupName := "CommonStates")> _
<TemplatePartAttribute(Name := "VerticalRoot", Type := GetType(FrameworkElement))> _
<TemplatePartAttribute(Name := "VerticalLargeIncrease", Type := GetType(RepeatButton))> _
<TemplatePartAttribute(Name := "VerticalLargeDecrease", Type := GetType(RepeatButton))> _
<TemplatePartAttribute(Name := "HorizontalThumb", Type := GetType(Thumb))> _
<TemplatePartAttribute(Name := "VerticalSmallDecrease", Type := GetType(RepeatButton))> _
<TemplatePartAttribute(Name := "VerticalThumb", Type := GetType(Thumb))> _
<TemplateVisualStateAttribute(Name := "Normal", GroupName := "CommonStates")> _
<TemplateVisualStateAttribute(Name := "MouseOver", GroupName := "CommonStates")> _
Public NotInheritable Class ScrollBar _
Inherits RangeBase
[TemplatePartAttribute(Name = "HorizontalSmallIncrease", Type = typeof(RepeatButton))]
[TemplatePartAttribute(Name = "HorizontalRoot", Type = typeof(FrameworkElement))]
[TemplatePartAttribute(Name = "HorizontalLargeIncrease", Type = typeof(RepeatButton))]
[TemplatePartAttribute(Name = "HorizontalLargeDecrease", Type = typeof(RepeatButton))]
[TemplatePartAttribute(Name = "HorizontalSmallDecrease", Type = typeof(RepeatButton))]
[TemplatePartAttribute(Name = "VerticalSmallIncrease", Type = typeof(RepeatButton))]
[TemplateVisualStateAttribute(Name = "Disabled", GroupName = "CommonStates")]
[TemplatePartAttribute(Name = "VerticalRoot", Type = typeof(FrameworkElement))]
[TemplatePartAttribute(Name = "VerticalLargeIncrease", Type = typeof(RepeatButton))]
[TemplatePartAttribute(Name = "VerticalLargeDecrease", Type = typeof(RepeatButton))]
[TemplatePartAttribute(Name = "HorizontalThumb", Type = typeof(Thumb))]
[TemplatePartAttribute(Name = "VerticalSmallDecrease", Type = typeof(RepeatButton))]
[TemplatePartAttribute(Name = "VerticalThumb", Type = typeof(Thumb))]
[TemplateVisualStateAttribute(Name = "Normal", GroupName = "CommonStates")]
[TemplateVisualStateAttribute(Name = "MouseOver", GroupName = "CommonStates")]
public sealed class ScrollBar : RangeBase
<ScrollBar .../>
The ScrollBar type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") |
ScrollBar | Initializes a new instance of the ScrollBar class. |
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Properties
| Name | Description | |
|---|---|---|
.gif "Public property") |
ActualHeight | Gets the rendered height of a FrameworkElement. (Inherited from FrameworkElement.) |
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ActualWidth | Gets the rendered width of a FrameworkElement. (Inherited from FrameworkElement.) |
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AllowDrop | Gets or sets a value that determines whether this UIElement can be a drop target for purposes of drag-and-drop operations. (Inherited from UIElement.) |
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Background | (Inherited from Control.) |
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BorderBrush | (Inherited from Control.) |
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BorderThickness | (Inherited from Control.) |
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CacheMode | Gets or sets a value that indicates that rendered content should be cached when possible. (Inherited from UIElement.) |
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CharacterSpacing | (Inherited from Control.) |
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Clip | Gets or sets the Geometry used to define the outline of the contents of a UIElement. (Inherited from UIElement.) |
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Cursor | Infrastructure. Gets or sets the cursor image that displays while the pointer is over a FrameworkElement. (Inherited from FrameworkElement.) |
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DataContext | Gets or sets the data context for a FrameworkElement when it participates in data binding. (Inherited from FrameworkElement.) |
.gif "Protected property") |
DefaultStyleKey | (Inherited from Control.) |
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DesiredSize | Gets the size that this UIElement computed during the measure pass of the layout process. (Inherited from UIElement.) |
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Dispatcher | Gets the Dispatcher this object is associated with. (Inherited from DependencyObject.) |
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FlowDirection | Gets or sets the direction that text and other user interface elements flow within any parent element that controls their layout. (Inherited from FrameworkElement.) |
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FontFamily | (Inherited from Control.) |
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FontSize | (Inherited from Control.) |
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FontStretch | (Inherited from Control.) |
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FontStyle | (Inherited from Control.) |
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FontWeight | (Inherited from Control.) |
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Foreground | (Inherited from Control.) |
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Height | Gets or sets the suggested height of a FrameworkElement. (Inherited from FrameworkElement.) |
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HorizontalAlignment | Gets or sets the horizontal alignment characteristics that are applied to a FrameworkElement when it is composed in a layout parent, such as a panel or items control. (Inherited from FrameworkElement.) |
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HorizontalContentAlignment | (Inherited from Control.) |
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IsEnabled | (Inherited from Control.) |
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IsHitTestVisible | Gets or sets whether the contained area of this UIElement can return true values for hit testing. (Inherited from UIElement.) |
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IsTabStop | (Inherited from Control.) |
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Language | Gets or sets localization/globalization language information that applies to a FrameworkElement. (Inherited from FrameworkElement.) |
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LargeChange | Gets or sets a value to be added to or subtracted from the Value of a RangeBase control. (Inherited from RangeBase.) |
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Margin | Gets or sets the outer margin of a FrameworkElement. (Inherited from FrameworkElement.) |
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MaxHeight | Gets or sets the maximum height constraint of a FrameworkElement. (Inherited from FrameworkElement.) |
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Maximum | Gets or sets the highest possible Value of the range element. (Inherited from RangeBase.) |
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MaxWidth | Gets or sets the maximum width constraint of a FrameworkElement. (Inherited from FrameworkElement.) |
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MinHeight | Gets or sets the minimum height constraint of a FrameworkElement. (Inherited from FrameworkElement.) |
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Minimum | Gets or sets the Minimum possible Value of the range element. (Inherited from RangeBase.) |
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MinWidth | Gets or sets the minimum width constraint of a FrameworkElement. (Inherited from FrameworkElement.) |
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Name | Gets or sets the identifying name of the object. When a XAML processor creates the object tree from XAML markup, run-time code can refer to the XAML-declared object by this name. (Inherited from FrameworkElement.) |
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Opacity | Gets or sets the degree of the object's opacity. (Inherited from UIElement.) |
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OpacityMask | Gets or sets the brush used to alter the opacity of regions of this object. (Inherited from UIElement.) |
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Orientation | Gets or sets whether the ScrollBar is displayed horizontally or vertically. |
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Padding | (Inherited from Control.) |
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Parent | Gets the parent object of this FrameworkElement in the object tree. (Inherited from FrameworkElement.) |
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Projection | Gets or sets the perspective projection (3-D effect) to apply when rendering this UIElement. (Inherited from UIElement.) |
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RenderSize | Gets the final render size of a UIElement. (Inherited from UIElement.) |
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RenderTransform | Gets or sets transform information that affects the rendering position of a UIElement. (Inherited from UIElement.) |
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RenderTransformOrigin | Gets or sets the origin point of any possible render transform declared by RenderTransform, relative to the bounds of the UIElement. (Inherited from UIElement.) |
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Resources | Gets the locally defined resource dictionary. In XAML, you can establish resource items as child object elements of a frameworkElement.Resources property element, through XAML implicit collection syntax. (Inherited from FrameworkElement.) |
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SmallChange | Gets or sets a Value to be added to or subtracted from the Value of a RangeBase control. (Inherited from RangeBase.) |
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Style | Gets or sets an instance Style that is applied for this object during rendering. (Inherited from FrameworkElement.) |
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TabIndex | (Inherited from Control.) |
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TabNavigation | (Inherited from Control.) |
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Tag | Gets or sets an arbitrary object value that can be used to store custom information about this object. (Inherited from FrameworkElement.) |
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Template | (Inherited from Control.) |
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Triggers | Gets the collection of triggers for animations that are defined for a FrameworkElement. (Inherited from FrameworkElement.) |
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UseLayoutRounding | Gets or sets a value that determines whether rendering for the object and its visual subtree should use rounding behavior that aligns rendering to whole pixels. (Inherited from UIElement.) |
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UseOptimizedManipulationRouting | Gets or sets a value that indicates whether the system should handle input events or whether the FrameworkElement should handle input events. (Inherited from FrameworkElement.) |
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Value | Gets or sets the current setting of the range control, which may be coerced. (Inherited from RangeBase.) |
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VerticalAlignment | Gets or sets the vertical alignment characteristics that are applied to a FrameworkElement when it is composed in a parent object such as a panel or items control. (Inherited from FrameworkElement.) |
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VerticalContentAlignment | (Inherited from Control.) |
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ViewportSize | Gets or sets the amount of the scrollable content that is currently visible. |
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Visibility | Gets or sets the visibility of a UIElement. A UIElement that is not visible does not render and does not communicate its desired size to layout. (Inherited from UIElement.) |
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Width | Gets or sets the width of a FrameworkElement. (Inherited from FrameworkElement.) |
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Methods
| Name | Description | |
|---|---|---|
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AddHandler | Adds a routed event handler for a specified routed event, adding the handler to the handler collection on the current element. Specify handledEventsToo as true to have the provided handler be invoked for routed event that had already been marked as handled by another element along the event route. (Inherited from UIElement.) |
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ApplyTemplate | (Inherited from Control.) |
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Arrange | Positions child objects and determines a size for a UIElement. Parent objects that implement custom layout for their child elements should call this method from their layout override implementations to form a recursive layout update. (Inherited from UIElement.) |
.gif "Protected method") |
ArrangeOverride | Provides the behavior for the Arrange pass of Windows Phone layout. Classes can override this method to define their own Arrange pass behavior. (Inherited from FrameworkElement.) |
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CaptureMouse | Sets touch capture to a UIElement. (Inherited from UIElement.) |
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CheckAccess | Determines whether the calling thread has access to this object. (Inherited from DependencyObject.) |
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ClearValue | Clears the local value of a dependency property. (Inherited from DependencyObject.) |
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Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
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Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
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FindName | Retrieves an object that has the specified identifier name. (Inherited from FrameworkElement.) |
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Focus | (Inherited from Control.) |
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GetAnimationBaseValue | Returns any base value established for a Windows Phone dependency property, which would apply in cases where an animation is not active. (Inherited from DependencyObject.) |
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GetBindingExpression | Retrieves the BindingExpression for a dependency property where a binding is established. (Inherited from FrameworkElement.) |
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GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
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GetTemplateChild | (Inherited from Control.) |
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GetType | Gets the Type of the current instance. (Inherited from Object.) |
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GetValue | Returns the current effective value of a dependency property from a DependencyObject. (Inherited from DependencyObject.) |
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InvalidateArrange | Invalidates the arrange state (layout) for a UIElement. After the invalidation, the UIElement will have its layout updated, which will occur asynchronously. (Inherited from UIElement.) |
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InvalidateMeasure | Invalidates the measurement state (layout) for a UIElement. (Inherited from UIElement.) |
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Measure | Updates the DesiredSize of a UIElement. Typically, objects that implement custom layout for their layout children call this method from their own MeasureOverride implementations to form a recursive layout update. (Inherited from UIElement.) |
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MeasureOverride | Provides the behavior for the Measure pass of Windows Phone layout. Classes can override this method to define their own Measure pass behavior. (Inherited from FrameworkElement.) |
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MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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OnApplyTemplate | Builds the visual tree for the ScrollBar control when a new template is applied. (Overrides FrameworkElement..::.OnApplyTemplate()()().) |
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OnCreateAutomationPeer | When implemented in a derived class, returns class-specific AutomationPeer implementations for the Windows Phone automation infrastructure. (Inherited from UIElement.) |
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OnDoubleTap | (Inherited from Control.) |
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OnDragEnter | (Inherited from Control.) |
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OnDragLeave | (Inherited from Control.) |
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OnDragOver | (Inherited from Control.) |
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OnDrop | (Inherited from Control.) |
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OnGotFocus | (Inherited from Control.) |
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OnHold | (Inherited from Control.) |
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OnKeyDown | (Inherited from Control.) |
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OnKeyUp | (Inherited from Control.) |
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OnLostFocus | (Inherited from Control.) |
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OnLostMouseCapture | (Inherited from Control.) |
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OnManipulationCompleted | (Inherited from Control.) |
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OnManipulationDelta | (Inherited from Control.) |
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OnManipulationStarted | (Inherited from Control.) |
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OnMaximumChanged | Called when the Maximum property changes. (Inherited from RangeBase.) |
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OnMinimumChanged | Called when the Minimum property changes. (Inherited from RangeBase.) |
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OnMouseEnter | (Inherited from Control.) |
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OnMouseLeave | (Inherited from Control.) |
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OnMouseLeftButtonDown | (Inherited from Control.) |
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OnMouseLeftButtonUp | (Inherited from Control.) |
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OnMouseMove | (Inherited from Control.) |
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OnMouseRightButtonDown | (Inherited from Control.) |
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OnMouseRightButtonUp | (Inherited from Control.) |
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OnMouseWheel | (Inherited from Control.) |
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OnTap | (Inherited from Control.) |
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OnTextInput | (Inherited from Control.) |
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OnTextInputStart | (Inherited from Control.) |
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OnTextInputUpdate | (Inherited from Control.) |
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OnValueChanged | Raises the ValueChanged routed event. (Inherited from RangeBase.) |
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ReadLocalValue | Returns the local value of a dependency property, if a local value is set. (Inherited from DependencyObject.) |
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ReleaseMouseCapture | Removes touch capture from a UIElement. After this call, typically no object holds touch capture. (Inherited from UIElement.) |
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RemoveHandler | Removes the specified routed event handler from this UIElement. (Inherited from UIElement.) |
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SetBinding | Attaches a binding to a FrameworkElement, using the provided binding object, and returns a BindingExpressionBase for possible later use. (Inherited from FrameworkElement.) |
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SetValue | Sets the local value of a dependency property on a DependencyObject. (Inherited from DependencyObject.) |
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ToString | Provides a string representation of a RangeBase object. (Inherited from RangeBase.) |
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TransformToVisual | Returns a transform object that can be used to transform coordinates from the UIElement to the specified object. (Inherited from UIElement.) |
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UpdateLayout | Ensures that all positions of child objects of a UIElement are properly updated for layout. (Inherited from UIElement.) |
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Events
| Name | Description | |
|---|---|---|
.gif "Public event") |
BindingValidationError | Occurs when a data validation error is reported by a binding source. (Inherited from FrameworkElement.) |
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DoubleTap | Occurs when a DoubleTap gesture is committed while over this UIElement. (Inherited from UIElement.) |
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GotFocus | Occurs when a UIElement receives focus. (Inherited from UIElement.) |
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Hold | Occurs when a Hold gesture is committed while over this UIElement. (Inherited from UIElement.) |
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IsEnabledChanged | (Inherited from Control.) |
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KeyDown | Occurs when a keyboard key is pressed while the UIElement has focus. (Inherited from UIElement.) |
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KeyUp | Occurs when a keyboard key is released while the UIElement has focus. (Inherited from UIElement.) |
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LayoutUpdated | Occurs when the layout of the Windows Phone visual tree changes. (Inherited from FrameworkElement.) |
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Loaded | Occurs when a FrameworkElement has been constructed and added to the object tree. (Inherited from FrameworkElement.) |
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LostFocus | Occurs when a UIElement loses focus. (Inherited from UIElement.) |
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LostMouseCapture | Occurs when the UIElement loses touch capture. (Inherited from UIElement.) |
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ManipulationCompleted | Occurs when a manipulation and inertia on the UIElement is complete. (Inherited from UIElement.) |
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ManipulationDelta | Occurs when the input device changes position during a manipulation. (Inherited from UIElement.) |
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ManipulationStarted | Occurs when an input device begins a manipulation on the UIElement. (Inherited from UIElement.) |
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MouseEnter | Occurs when a screen tap occurs within the bounding area of a UIElement. (Inherited from UIElement.) |
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MouseLeave | Occurs when a touch event occurs outside the bounding area of a UIElement. (Inherited from UIElement.) |
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MouseLeftButtonDown | Occurs when a UIElement is tapped. (Inherited from UIElement.) |
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MouseLeftButtonUp | Occurs when the finger is lifted off of a UIElement (or while a UIElement holds touch capture). (Inherited from UIElement.) |
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MouseMove | Occurs when the coordinate position of the finger on the screen while touching a UIElement (or while a UIElement holds touch capture). (Inherited from UIElement.) |
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MouseWheel | Infrastructure. Occurs when the user rotates the mouse wheel while the mouse pointer is over a UIElement, or the UIElement has focus. (Inherited from UIElement.) |
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Scroll | Occurs one or more times as content scrolls in a ScrollBar when the user moves the Thumb. |
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SizeChanged | Occurs when either the ActualHeight or the ActualWidth properties change value on a FrameworkElement. (Inherited from FrameworkElement.) |
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Tap | Occurs when a Tap gesture is committed while over this UIElement. (Inherited from UIElement.) |
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TextInput | Occurs when a UI element gets text in a device-independent manner. (Inherited from UIElement.) |
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TextInputStart | Occurs when a UI element initially gets text in a device-independent manner. (Inherited from UIElement.) |
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TextInputUpdate | Occurs when text continues to be composed via an input method editor (IME). (Inherited from UIElement.) |
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Unloaded | Occurs when this object is no longer connected to the main object tree. (Inherited from FrameworkElement.) |
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ValueChanged | Occurs when the range value changes. (Inherited from RangeBase.) |
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Fields
| Name | Description | |
|---|---|---|
.gif "Public field") .gif "Static member") |
OrientationProperty | Identifies the Orientation dependency property. |
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ViewportSizeProperty | Identifies the ViewportSize dependency property. |
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Remarks
The ScrollBar control consists of a Thumb control and two RepeatButton controls. You can increase and decrease the RangeBase..::.Value property of the ScrollBar control by pressing the RepeatButton controls or by moving the Thumb. The default range of values for the RangeBase..::.Value property is from 0 to 10. The RangeBase..::.Value represents the linear distance of the Thumb between the endpoints of the ScrollBar. You can change the default range of values by setting the RangeBase..::.Minimum and RangeBase..::.Maximum properties. The Orientation property determines whether the ScrollBar is displayed horizontally or vertically.
The scroll track in a ScrollBar is oriented so that values increase from top to bottom for a vertical ScrollBar or from left to right for a horizontal ScrollBar.
For a list of the initial property values for an instance of the ScrollBar class, see the ScrollBar()()() constructor.
To display content inside a box that has scrollbars, use the ScrollViewer control.
Version Information
Windows Phone OS
Supported in: 8.1, 8.0, 7.1, 7.0
Platforms
Windows Phone
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.