# FillRule Enumeration

**Silverlight**

Specifies how the intersecting areas of PathFigure objects contained in a Geometry are combined to form the area of the Geometry.

**Namespace:**System.Windows.Media

**Assembly:**System.Windows (in System.Windows.dll)

Member name | Description | |
---|---|---|

EvenOdd | Rule that determines whether a point is in the fill region by drawing a ray from that point to infinity in any direction and counting the number of path segments within the given shape that the ray crosses. If this number is odd, the point is inside; if even, the point is outside. | |

Nonzero | Rule that determines whether a point is in the fill region of the path by drawing a ray from that point to infinity in any direction and then examining the places where a segment of the shape crosses the ray. Starting with a count of 0, add one each time a segment crosses the ray from left to right and subtract one each time a path segment crosses the ray from right to left. After counting the crossings, if the result is 0 then the point is outside the path. Otherwise, it is inside. |

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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