# Zoning Method

## Content



Use the [ZoneMethod](/componentone/api/win/online-chart3d/dotnet-framework-api/C1.Win.C1Chart3D.4.8/C1.Win.C1Chart3D.Chart3DContour.ZoneMethod.html) property of the [Chart3DContour](/componentone/api/win/online-chart3d/dotnet-framework-api/C1.Win.C1Chart3D.4.8/C1.Win.C1Chart3D.Chart3DContour.html) object to specify how to determine each zone region. Contour zoning uses the contour intervals for each zone region, while cell zoning uses the rectangular block formed by the X/Y grid. Cell zoning produces a coarser-looking surface but redraws significantly faster than contour zoning. **ZoneMethod** can be accessed at design time through the **Contour** node, which is located in the **ChartGroup Collection Editor** in the Visual Studio Properties window.

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## See Also

[3D Mesh Formats](/componentone/docs/win/online-chart3d/3dchartelements/3dmeshformats)