AE中知道图层删除图层内容
//已知图层
IFeatureLayer pFeatureLayer = this._application.MapControl2D.Map.get_Layer(0) as IFeatureLayer;
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
if (pFeatureClass.FeatureCount(null) > 0)
{
for (int i = 0; i < pFeatureClass.FeatureCount(null); i++)
{
IFeature pFeature = pFeatureClass.GetFeature(i);
pFeature.Delete();
}
}