ISpatialFilter 空间分析 相交、相接、包含、叠加（图层级别）
| 空间过滤器空间关系类型 | 描述(A是待查询图形，B是过滤条件图形) |
| esriSpatialRelUndefined | 未定义 |
| esriSpatialRelIntersects | A与B图形相交 |
| esriSpatialRelEnvelopeIntersects | A的Envelope和B的Envelope相交 |
| esriSpatialRelIndexIntersects | A与B索引相交 |
| esriSpatialRelTouches | Ａ与B边界相接 |
| esriSpatialRelOverlaps | A与B相叠加 |
| esriSpatialRelCrosses | A与B相交（两条线相交于一点，一条线和一个面相交） |
| esriSpatialRelWithin | A在B内 |
| esriSpatialRelContains | A包含B |
| esriSpatialRelRelation | A与B空间关联 |
//相邻运算
ISpatialFilter spatialFilter = new SpatialFilterClass
{
Geometry = feature.Shape as IGeometry, //
SpatialRel = esriSpatialRelEnum.esriSpatialRelTouches, //相接
GeometryField = featureClass.ShapeFieldName
};
IFeatureCursor featureCursor2 = featureClass.Search(spatialFilter, true);
转载自：https://blog.csdn.net/qq_33222460/article/details/87818307
