/// <summary>
/// 获取要素数据集中的所有拓扑
/// </summary>
/// <param name="featureDataset">要素数据集</param>
/// <returns></returns>
public static List <ITopology> GetAllTopology(this IFeatureDataset featureDataset)
{
List <ITopology> result = new List <ITopology>();
ITopologyContainer topologyContainer = (ITopologyContainer)featureDataset;
for (int i = 0; i < topologyContainer.TopologyCount; i++)
{
result.Add(topologyContainer.get_Topology(i));
}
return(result);
}
/// <summary>
/// 从要素数据集中获得第一个拓扑
/// </summary>
/// <param name="topoFeatureDataset"></param>
/// <returns></returns>
public static ITopology GetFirstTopology(this IFeatureDataset topoFeatureDataset)
{
ITopologyContainer topologyContainer = (ITopologyContainer)topoFeatureDataset;
return(topologyContainer.get_Topology(0));
}