VisualElement.Opacity Property
Definition
Important
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Gets or sets the opacity value applied to the element when it is rendered. This is a bindable property.
public double Opacity { get; set; }member this.Opacity : double with get, setProperty Value
The opacity value. Default opacity is 1.0. Values will be clamped between 0 and 1 on set.
Remarks
The opacity value has no effect unless IsVisible is true. Opacity is inherited down the element hierarchy. If a parent has 0.5 opacity, and a child has 0.5 opacity, the child will render with an effective 0.25 opacity. Setting opacity to 0 has undefined behavior with input elements.
The following example sets the opacity of a layout to 0.5 and the opacity of one of its children to 0.5, making the child 25% opaque.
StackLayout stack = new StackLayout ();
Button button1 = new Button {Text="A Button"};
Button button2 = new Button {Text="Another Button"};
stack.Children.Add (button1);
stack.Children.Add (button2);
// The stack and everything in it will become 50% opaque
stack.Opacity = 0.5;
// button1 will become 25% opaque while the stack and button2 remane 50% opaque
button1.Opacity = 0.5;