Shape.StrokeThickness Property
Silverlight
Gets or sets the width of the Shape stroke outline.
Namespace: System.Windows.Shapes
Assembly: System.Windows (in System.Windows.dll)
Dependency property identifier field: StrokeThicknessProperty
StrokeThickness also applies to the various stroke decorations if they are defined, such as StrokeStartLineCap, or the StrokeDashArray dash pattern.
Generally you should use integral numeric values for this property. Nonintegral values can cause subpixel rendering, and may alter the apparent color of the stroke.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.