到目前为止，我知道的能生成缓冲区的有两种方法，一个是ITopologicalOperator.Buffer，另一个是使用ESRI.ArcGIS.AnalysisTools.Buffer。前者争对的是一个单独的IGeometry对象，后者则是对整个图层。-So far, I know will be able to create a Buffer zone have two kinds of methods, one is ITopolo

缓冲区分析：调用ITopologicalOperator接口，输入城市名称，建立缓冲区。-Buffer: Enter the name of the city to establish a buffer zone.

运用ITopoLogicalOperator接口进行空间拓扑运算，例如几何图像的裁剪，分割，差值运算等-ITopoLogicalOperator interface using topological operations, such as geometric image cropping, split the difference operation, etc.

ArcEngine缓冲区分析 利用GP工具和ITopologicaloperator接口两种方法实现(ArcEngine buffer analysis uses the GP tool and the ITopologicaloperator interface to implement the two methods)