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 ITopologicalOperator. Buffer, and the

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.

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)