利用C#编写的一个关于SharpMap的例子，能够加载shapeFile图层，对图层叠加顺序进行调整，对图层属性进行设置，而且还实现了buffer和touches两个方法-The use of a C# written about SharpMap example, be able to load shapeFile layers, superimposed on the layer to adjust the order of the layers set property, but also