Page Class
Definition
Important
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A VisualElement that occupies the entire screen.
[Xamarin.Forms.RenderWith(typeof(Xamarin.Forms.Platform._PageRenderer))]
public class Page : Xamarin.Forms.VisualElement, Xamarin.Forms.IElementConfiguration<Xamarin.Forms.Page>, Xamarin.Forms.ILayout, Xamarin.Forms.IPageControllertype Page = class
inherit VisualElement
interface ILayout
interface IPageController
interface IVisualElementController
interface IElementController
interface IElementConfiguration<Page>- Inheritance
- Derived
- Attributes
- Implements
Remarks
Page is primarily a base class for more useful derived types. Objects that are derived from the Page class are most prominently used as the top level UI element in Xamarin.Forms applications. In addition to their role as the main pages of Xamarin.Forms applications, Page objects and their descendants can be used with navigation classes, such as NavigationPage or MasterDetailPage, among others, to provide rich user experiences that conform to the expected behaviors on each platform.
Constructors
| Page() |
Creates a new Page element with default values. |
Fields
| ActionSheetSignalName |
This method is for internal use. |
| AlertSignalName |
This method is for internal use. |
| BackgroundImageProperty |
Obsolete.
Identifies the BackgroundImage property. |
| BackgroundImageSourceProperty | |
| BusySetSignalName |
This method is for internal use. |
| IconImageSourceProperty | |
| IconProperty |
Obsolete.
Identifies the Icon property. |
| IsBusyProperty |
Identifies the IsBusy property. |
| PaddingProperty |
Identifies the Padding property. |
| PromptSignalName | |
| TitleProperty |
Identifies the Title property. |
Properties
| AnchorX |
Gets or sets the X component of the center point for any transform, relative to the bounds of the element. This is a bindable property. (Inherited from VisualElement) |
| AnchorY |
Gets or sets the Y component of the center point for any transform, relative to the bounds of the element. This is a bindable property. (Inherited from VisualElement) |
| AutomationId |
Gets or sets a value that allows the automation framework to find and interact with this element. (Inherited from Element) |
| Background | (Inherited from VisualElement) |
| BackgroundColor |
Gets or sets the color which will fill the background of a VisualElement. This is a bindable property. (Inherited from VisualElement) |
| BackgroundImage |
Obsolete.
Identifies the image used as a background for the Page. |
| BackgroundImageSource | |
| Batched |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| Behaviors |
Gets the list of Behaviors associated to this element. This is a bindable property. (Inherited from VisualElement) |
| BindingContext |
Gets or sets object that contains the properties that will be targeted by the bound properties that belong to this BindableObject. (Inherited from BindableObject) |
| Bounds |
Gets the bounds of the element. (Inherited from VisualElement) |
| class | (Inherited from NavigableElement) |
| ClassId |
Gets or sets a value used to identify a collection of semantically similar elements. (Inherited from Element) |
| Clip | (Inherited from VisualElement) |
| ContainerArea |
For internal use by the Xamarin.Forms platform. |
| DisableLayout |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| Dispatcher | (Inherited from BindableObject) |
| EffectControlProvider |
For internal use by the Xamarin.Forms platform. (Inherited from Element) |
| Effects |
A list of the effects that are applied to this item. (Inherited from Element) |
| FlowDirection |
Gets or sets the layout flow direction. (Inherited from VisualElement) |
| Height |
Gets the current rendered height of this element. This is a read-only bindable property. (Inherited from VisualElement) |
| HeightRequest |
Gets or sets the desired height override of this element. (Inherited from VisualElement) |
| Icon |
Obsolete.
Resource identifier for the Page's associated icon. |
| IconImageSource | |
| Id |
Gets a value that can be used to uniquely identify an element through the run of an application. (Inherited from Element) |
| IgnoresContainerArea |
For internal use by the Xamarin.Forms platform. |
| InputTransparent |
Gets or sets a value indicating whether this element should be involved in the user interaction cycle. This is a bindable property. (Inherited from VisualElement) |
| InternalChildren |
For internal use by the Xamarin.Forms platform. |
| IsBusy |
Marks the Page as busy. This will cause the platform specific global activity indicator to show a busy state. |
| IsEnabled |
Gets or sets a value indicating whether this element is enabled in the user interface. This is a bindable property. (Inherited from VisualElement) |
| IsFocused |
Gets a value indicating whether this element is focused currently. This is a bindable property. (Inherited from VisualElement) |
| IsInNativeLayout |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| IsNativeStateConsistent |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| IsPlatformEnabled |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| IsTabStop |
Gets or sets a value that indicates whether this element is included in tab navigation. This is a bindable property. (Inherited from VisualElement) |
| IsVisible |
Gets or sets a value that determines whether this elements should be part of the visual tree or not. This is a bindable property. (Inherited from VisualElement) |
| LogicalChildren |
For internal use by the Xamarin.Forms platform. (Inherited from Element) |
| MinimumHeightRequest |
Gets or sets a value which overrides the minimum height the element will request during layout. (Inherited from VisualElement) |
| MinimumWidthRequest |
Gets or sets a value which overrides the minimum width the element will request during layout. (Inherited from VisualElement) |
| Navigation | (Inherited from NavigableElement) |
| NavigationProxy | (Inherited from NavigableElement) |
| Opacity |
Gets or sets the opacity value applied to the element when it is rendered. This is a bindable property. (Inherited from VisualElement) |
| Padding |
The space between the content of the Page and it's border. |
| Parent |
Gets or sets the parent element of the element. (Inherited from Element) |
| ParentView |
Obsolete.
Gets the element which is the closest ancestor of this element that is a VisualElement. (Inherited from Element) |
| Platform |
Obsolete.
(Inherited from Element)
|
| RealParent |
For internal use by the Xamarin.Forms platform. (Inherited from Element) |
| Resources |
Gets or sets the local resource dictionary. (Inherited from VisualElement) |
| Rotation |
Gets or sets the rotation (in degrees) about the Z-axis (affine rotation) when the element is rendered. (Inherited from VisualElement) |
| RotationX |
Gets or sets the rotation (in degrees) about the X-axis (perspective rotation) when the element is rendered. (Inherited from VisualElement) |
| RotationY |
Gets or sets the rotation (in degrees) about the Y-axis (perspective rotation) when the element is rendered. (Inherited from VisualElement) |
| Scale |
Gets or sets the scale factor applied to the element. (Inherited from VisualElement) |
| ScaleX |
Gets or sets a scale value to apply to the X direction. (Inherited from VisualElement) |
| ScaleY |
Gets or sets a scale value to apply to the Y direction. (Inherited from VisualElement) |
| Style | (Inherited from NavigableElement) |
| StyleClass | (Inherited from NavigableElement) |
| StyleId |
Gets or sets a user defined value to uniquely identify the element. (Inherited from Element) |
| TabIndex | (Inherited from VisualElement) |
| Title |
The Page's title. |
| ToolbarItems |
A set of ToolbarItems, implemented in a platform-specific manner. |
| TranslationX |
Gets or sets the X translation delta of the element. (Inherited from VisualElement) |
| TranslationY |
Gets or sets the Y translation delta of the element. (Inherited from VisualElement) |
| Triggers |
Gets the list of Trigger associated to this element. This is a bindable property. (Inherited from VisualElement) |
| Visual | (Inherited from VisualElement) |
| Width |
Gets the current rendered width of this element. This is a read-only bindable property. (Inherited from VisualElement) |
| WidthRequest |
Gets or sets the desired width override of this element. (Inherited from VisualElement) |
| X |
Gets the current X position of this element. This is a read-only bindable property. (Inherited from VisualElement) |
| Y |
Gets the current Y position of this element. This is a read-only bindable property. (Inherited from VisualElement) |
Methods
| ApplyBindings() |
Apply the bindings to BindingContext. (Inherited from BindableObject) |
| BatchBegin() |
Signals the start of a batch of changes to the elements properties. (Inherited from VisualElement) |
| BatchCommit() |
Signals the end of a batch of commands to the element and that those commands should now be committed. (Inherited from VisualElement) |
| ChangeVisualState() |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| ClearValue(BindableProperty) |
Clears any value set by SetValue for |
| ClearValue(BindablePropertyKey) |
Clears any value set by SetValue for the property that is identified by |
| CoerceValue(BindableProperty) | (Inherited from BindableObject) |
| CoerceValue(BindablePropertyKey) | (Inherited from BindableObject) |
| Descendants() |
For internal use by the Xamarin.Forms platform. (Inherited from Element) |
| DisplayActionSheet(String, String, String, String[]) |
Displays a native platform action sheet, allowing the application user to choose from several buttons. |
| DisplayAlert(String, String, String, String) |
Presents an alert dialog to the application user with an accept and a cancel button. |
| DisplayAlert(String, String, String) |
Presents an alert dialog to the application user with a single cancel button. |
| DisplayPromptAsync(String, String, String, String, String, Int32, Keyboard, String) | |
| DisplayPromptAsync(String, String, String, String, String, Int32, Keyboard) | |
| EffectIsAttached(String) |
For internal use by the Xamarin.Forms platform. (Inherited from Element) |
| FindByName(String) |
Returns the element that has the specified name. (Inherited from Element) |
| Focus() |
Attemps to set focus to this element. (Inherited from VisualElement) |
| ForceLayout() |
Forces the Page to perform a layout pass. |
| GetSizeRequest(Double, Double) |
Obsolete.
Returns the SizeRequest of the element. Calling this method begins the measure pass of a layout cycle. (Inherited from VisualElement) |
| GetValue(BindableProperty) |
Returns the value that is contained in the BindableProperty. (Inherited from BindableObject) |
| GetValues(BindableProperty, BindableProperty, BindableProperty) |
Obsolete.
For internal use by the Xamarin.Forms platform. (Inherited from BindableObject) |
| GetValues(BindableProperty, BindableProperty) |
Obsolete.
For internal use by the Xamarin.Forms platform. (Inherited from BindableObject) |
| InvalidateMeasure() |
Method that is called to invalidate the layout of this VisualElement. Raises the MeasureInvalidated event. (Inherited from VisualElement) |
| InvalidateMeasureNonVirtual(InvalidationTrigger) |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| IsSet(BindableProperty) |
Returns |
| Layout(Rectangle) |
Updates the bounds of the element during the layout cycle. (Inherited from VisualElement) |
| LayoutChildren(Double, Double, Double, Double) |
Lays out children Elements into the specified area. |
| Measure(Double, Double, MeasureFlags) |
Returns the minimum size that a visual element needs in order to be displayed on the device. (Inherited from VisualElement) |
| NativeSizeChanged() |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| On<T>() |
Returns the platform-specific instance of this Page, on which a platform-specific method may be called. |
| OnAppearing() |
When overridden, allows application developers to customize behavior immediately prior to the Page becoming visible. |
| OnBackButtonPressed() |
Application developers can override this method to provide behavior when the back button is pressed. |
| OnBindingContextChanged() |
Invoked whenever the binding context of the Page changes. Override this method to add class handling for this event. |
| OnChildAdded(Element) |
Application developers can override this method to respond when a child is added. (Inherited from VisualElement) |
| OnChildMeasureInvalidated(Object, EventArgs) |
Indicates that the preferred size of a child Element has changed. |
| OnChildRemoved(Element, Int32) | (Inherited from VisualElement) |
| OnChildRemoved(Element) |
Obsolete.
Application developers can override this method to respond when a child is removed. (Inherited from VisualElement) |
| OnChildrenReordered() |
Invoked whenever the ChildrenReordered event is about to be emitted. Implement this method to add class handling for this event. (Inherited from VisualElement) |
| OnDisappearing() |
When overridden, allows the application developer to customize behavior as the Page disappears. |
| OnMeasure(Double, Double) |
Method that is called when a layout measurement happens. (Inherited from VisualElement) |
| OnParentSet() | |
| OnPropertyChanged(String) |
Method that is called when a bound property is changed. (Inherited from Element) |
| OnPropertyChanging(String) |
Call this method from a child class to notify that a change is going to happen on a property. (Inherited from BindableObject) |
| OnSizeAllocated(Double, Double) |
Indicates that the Page has been assigned a size. |
| OnSizeRequest(Double, Double) |
Obsolete.
This method is called during the measure pass of a layout cycle to get the desired size of an element. (Inherited from VisualElement) |
| OnTabIndexPropertyChanged(Int32, Int32) | (Inherited from VisualElement) |
| OnTabStopPropertyChanged(Boolean, Boolean) | (Inherited from VisualElement) |
| RemoveBinding(BindableProperty) |
Removes a previously set binding. (Inherited from BindableObject) |
| RemoveDynamicResource(BindableProperty) |
Removes a previously set dynamic resource (Inherited from Element) |
| SendAppearing() |
For internal use by the Xamarin.Forms platform. |
| SendBackButtonPressed() |
Calls OnBackButtonPressed(). |
| SendDisappearing() |
For internal use by the Xamarin.Forms platform. |
| SetBinding(BindableProperty, BindingBase) |
Assigns a binding to a property. (Inherited from BindableObject) |
| SetDynamicResource(BindableProperty, String) |
Sets the BindableProperty property of this element to be updated via the DynamicResource with the provided key. (Inherited from Element) |
| SetValue(BindableProperty, Object) |
Sets the value of the specified property. (Inherited from BindableObject) |
| SetValue(BindablePropertyKey, Object) |
Sets the value of the propertyKey. (Inherited from BindableObject) |
| SetValueCore(BindableProperty, Object, SetValueFlags) |
For internal use by the Xamarin.Forms platform. (Inherited from BindableObject) |
| SetValueFromRenderer(BindableProperty, Object) |
For internal use by the Xamarin.Forms platform. (Inherited from Element) |
| SetValueFromRenderer(BindablePropertyKey, Object) |
For internal use by the Xamarin.Forms platform. (Inherited from Element) |
| SizeAllocated(Double, Double) |
SizeAllocated is called during a layout cycle to signal the start of a sub-tree layout. (Inherited from VisualElement) |
| TabIndexDefaultValueCreator() | (Inherited from VisualElement) |
| TabStopDefaultValueCreator() | (Inherited from VisualElement) |
| UnapplyBindings() |
Unapplies all previously set bindings. (Inherited from BindableObject) |
| Unfocus() |
Unsets focus to this element. (Inherited from VisualElement) |
| UpdateChildrenLayout() |
Requests that the children Elements of the Page update their layouts. |
Events
| Appearing |
Indicates that the Page is about to appear. |
| BatchCommitted |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| BindingContextChanged |
Raised whenever the BindingContext property changes. (Inherited from BindableObject) |
| ChildAdded |
Occurs whenever a child element is added to the element. (Inherited from Element) |
| ChildRemoved |
Occurs whenever a child element is removed from the element. (Inherited from Element) |
| ChildrenReordered |
Occurs when the Children of a VisualElement have been re-ordered. (Inherited from VisualElement) |
| DescendantAdded |
Occurs whenever a child element is added to the elements subtree. (Inherited from Element) |
| DescendantRemoved |
Occurs whenever a child element is removed from the elements subtree. (Inherited from Element) |
| Disappearing |
Indicates that the Page is about to cease displaying. |
| FocusChangeRequested |
For internal use by the Xamarin.Forms platform. (Inherited from VisualElement) |
| Focused |
Occurs when the element receives focus. (Inherited from VisualElement) |
| LayoutChanged |
Raised when the layout of the Page has changed. |
| MeasureInvalidated |
Event that is raised when the layout of a visual element is invalidated. (Inherited from VisualElement) |
| PlatformSet |
Obsolete.
(Inherited from Element)
|
| PropertyChanged |
Raised when a property has changed. (Inherited from BindableObject) |
| PropertyChanging |
Raised when a property is about to change. (Inherited from BindableObject) |
| SizeChanged |
Occurs when either the Width or the Height properties change value on this element. (Inherited from VisualElement) |
| Unfocused |
Occurs when the element loses focus. (Inherited from VisualElement) |
Explicit Interface Implementations
| IDynamicResourceHandler.SetDynamicResource(BindableProperty, String) |
For internal use by the Xamarin.Forms platform. (Inherited from BindableObject) |
| IElementController.SetValueFromRenderer(BindableProperty, Object) |
For internal use by the Xamarin.Forms platform. (Inherited from Element) |
| INameScope.RegisterName(String, Object) |
For internal use only. (Inherited from Element) |
| IVisualElementController.EffectiveFlowDirection |
Gets the effective visual flow direction for the element on the platform, taking into account the locale and logical flow settings. (Inherited from VisualElement) |
| IVisualElementController.InvalidateMeasure(InvalidationTrigger) |
This method is for internal use. (Inherited from VisualElement) |