Opacity Property
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Brush.Opacity Property


Gets or sets the degree of opacity of a Brush.

Namespace:   System.Windows.Media
Assembly:  PresentationCore (in PresentationCore.dll)

Public Property Opacity As Double

Property Value

Type: System.Double

The value of the Opacity property is expressed as a value between 0.0 and 1.0. The default value is 1.0.

A Opacity value of 0 indicates that the brush is completely transparent, while a value of 1 indicates that the brush is completely opaque. A value of 0.5 indicates the brush is 50% opaque, a value of 0.725 indicates the brush is 72.5% opaque, and so on. Values less than 0 are treated as 0, while values greater than 1 are treated as 1.

Identifier field


Metadata properties set to true


.NET Framework
Available since 3.0
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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