Class Canvas

Defines an area within which you can explicitly position child objects, using coordinates that are relative to the Canvas area.

Inheritance
System.Object
DependencyObject
UIElement
FrameworkElement
Panel
Canvas
InkPresenter
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: System.Windows.Controls
Assembly: OpenSilver.dll
Syntax
public class Canvas : Panel, IFrameworkElement, IUIElement, IDependencyObject
Examples

You can add a Canvas to the XAML as follows:

Or in C#:

Canvas myCanvas = new Canvas();
myCanvas.Width = 100;
myCanvas.Height = 100;
myCanvas.Background = new SolidColorBrush(Windows.UI.Colors.Blue);
myCanvas.HorizontalAlignment=HorizontalAlignment.Left;

Fields

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LeftProperty

Identifies the Canvas.Left attached property.

Declaration
public static readonly DependencyProperty LeftProperty
Field Value
Type Description
DependencyProperty
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TopProperty

Identifies the Canvas.Top attached property.

Declaration
public static readonly DependencyProperty TopProperty
Field Value
Type Description
DependencyProperty
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ZIndexProperty

Identifies the Canvas.ZIndex attached property.

Declaration
public static readonly DependencyProperty ZIndexProperty
Field Value
Type Description
DependencyProperty

Methods

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ArrangeOverride(Size)

Declaration
protected override Size ArrangeOverride(Size finalSize)
Parameters
Type Name Description
Size finalSize
Returns
Type Description
Size
Overrides
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GetLeft(UIElement)

Gets the value of the Canvas.Left XAML attached property for the target element.

Declaration
public static double GetLeft(UIElement element)
Parameters
Type Name Description
UIElement element

The object from which the property value is read.
Returns
Type Description
System.Double

The Canvas.Left XAML attached property value of the specified object.
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GetTop(UIElement)

Gets the value of the Canvas.Top XAML attached property for the target element.

Declaration
public static double GetTop(UIElement element)
Parameters
Type Name Description
UIElement element

The object from which the property value is read.
Returns
Type Description
System.Double

The Canvas.Top XAML attached property value of the specified object.
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GetZIndex(UIElement)

Gets the value of the Canvas.ZIndex XAML attached property for the target element.

Declaration
public static int GetZIndex(UIElement element)
Parameters
Type Name Description
UIElement element

The object from which the property value is read.
Returns
Type Description
System.Int32

The Canvas.ZIndex XAML attached property value of the specified object.
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MeasureOverride(Size)

Declaration
protected override Size MeasureOverride(Size availableSize)
Parameters
Type Name Description
Size availableSize
Returns
Type Description
Size
Overrides
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SetLeft(UIElement, Double)

Sets the value of the Canvas.Left XAML attached property for a target element.

Declaration
public static void SetLeft(UIElement element, double value)
Parameters
Type Name Description
UIElement element

The object to which the property value is written.
System.Double value

The value to set.
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SetTop(UIElement, Double)

Sets the value of the Canvas.Top XAML attached property for a target element.

Declaration
public static void SetTop(UIElement element, double value)
Parameters
Type Name Description
UIElement element

The object to which the property value is written.
System.Double value

The value to set.
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SetZIndex(UIElement, Int32)

Sets the value of the Canvas.ZIndex XAML attached property for a target element.

Declaration
public static void SetZIndex(UIElement element, int value)
Parameters
Type Name Description
UIElement element

The object to which the property value is written.
System.Int32 value

The value to set.

Extension Methods