esriFeatureType通常用來表示數據的存儲結構，即物理層；

esriGeometryType通常用來表示數據的幾何形狀，即表現層。

esriGeometryType枚舉類型詳解
常量	值	對象
esriGeometryNull	0	未知類型（Unknown）
esriGeometryPoint	1	點（Point）
esriGeometryMultipoint	2	多點（Multipoint）
esriGeometryLine	13	線段（Line）
esriGeometryCircularArc	14	圓弧（CircularArc）
esriGeometryEllipticArc	16	橢圓弧（EllipticArc）
esriGeometryBezier3Curve	15	貝茲曲線（BezierCurve）
esriGeometryPath	6	路徑（Path）
esriGeometryPolyline	3	多段線（Polyline）
esriGeometryRing	11	環（Ring）
esriGeometryPolygon	4	多邊形（Polygon）
esriGeometryEnvelope	5	外包（Envelope）
esriGeometryAny	7	任何類型（Any valid geometry）
esriGeometryBag	17	任意幾何類型的集合（GeometryBag）
esriGeometryMultiPatch	9	表面幾何（MultiPatch）
esriGeometryTriangleStrip	18	三角帶（TriangleStrip）
esriGeometryTriangleFan	19	三角扇形（TriangleFan）
esriGeometryRay	20	射線（Ray）
esriGeometrySphere	21	球體（Sphere）
esriGeometryTriangles	22	三角形（Triangles）

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esriFeatureType枚舉類型詳解
常量	值	描述	對象
esriFTSimple	1	Polygons, polylines, and points representing objects or places that have area, such as water bodies; linear objects, such as rivers; and localized positions, such as houses or sample sites.	Simple Feature.
esriFTSimpleJunction	7	Simple junction feature in a geometric network representing point objects, such as a fuse, service point, or telephone pole.	Simple Junction Feature.
esriFTSimpleEdge	8	Simple edge feature in a geometric network representing polyline objects, such as primary or secondary overheads.	Simple Edge Feature.
esriFTComplexJunction	9	Complex junction feature in a geometric network, not in general use.	Complex Junction Feature.
esriFTComplexEdge	10	Complex edge feature in a geometric network representing polyline objects such as primary overheads, which have midspan connectivity.?Network resources flow through complex edge without interruption by midspan connectivity.	Complex Edge Feature.
esriFTAnnotation	11	Place or object names or identifiers, such as street names, hydrant ID numbers, land values, or elevation.	Annotation Feature.
esriFTCoverageAnnotation	12	Place or object names or identifiers, such as street names, hydrant ID numbers, land values, or elevation. Not supported in geodatabases, only supported in coverage datasets.	Coverage Annotation Feature.
esriFTDimension	13	Measurements, such as distances, lengths, widths, and depths.	Dimension Feature.
esriFTRasterCatalogItem	14	A raster dataset in a raster catalog that has information, such as footprints, names, metadata, and any other user-defined attributes.	Raster Catalog Item.

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轉載于:https://www.cnblogs.com/CSharpLover/p/5782832.html

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