public void TestAddValidatingItem()
{
    // 取出数据源中名为“source”和“validating”的矢量数据集，分别为 sourceDataset 和 validatingDataset
    DatasetVector sourceDataset = (DatasetVector)datasource.Datasets["source"];
    DatasetVector validatingDataset = (DatasetVector)datasource.Datasets["validating"];

    // 构建拓扑预处理对象
    TopologyDatasetRelationItem relationItem_s = new TopologyDatasetRelationItem(sourceDataset);
    relationItem_s.PrecisionOrder = 1;
    TopologyDatasetRelationItem relationItem_v = new TopologyDatasetRelationItem(validatingDataset);
    relationItem_v.PrecisionOrder = 2;

    // 创建拓扑数据集
    DatasetTopologyInfo datasetTopologyInfo = new DatasetTopologyInfo();
    datasetTopologyInfo.Name = "拓扑数据集";
    DatasetTopology datasetTopology = datasource.Datasets.Create(datasetTopologyInfo);

    // 构建拓扑检查对象，将其添加到拓扑数据集中
    // 注意用于检查的数据集以及待检查的数据集必须是预处理项中包含的数据集。
    TopologyValidatingItem topologyValidatingItem = new TopologyValidatingItem();
    topologyValidatingItem.Rule = TopologyRule.RegionNoOverlap;
    topologyValidatingItem.SourceDataset = sourceDataset;
    topologyValidatingItem.ValidatingDataset = validatingDataset;

    TopologyDatasetRelationItems topologyDatasetRelationItems = datasetTopology.RelationItems;
    topologyDatasetRelationItems.Add(relationItem_s);
    topologyDatasetRelationItems.Add(relationItem_v);
    Console.WriteLine(topologyDatasetRelationItems.Count);

    datasetTopology.AddValidatingItem(topologyValidatingItem);

    // 设置拓扑数据集的节点捕捉容限
    datasetTopology.Tolerance = 20;
    datasetTopology.Close();
}