转自原文

 

        /// <summary>
        /// 获取所有要素集
        /// </summary>
        /// <param name="workspace">工作空间对象</param>
        /// <returns>要素集列表</returns>
        public static List<IFeatureDataset> GetAllFeatureClass(IWorkspace workspace)
        {
            IEnumDataset dataset = workspace.get_Datasets(esriDatasetType.esriDTFeatureDataset);
            IFeatureDataset featureDataset = dataset.Next() as IFeatureDataset;


            List<IFeatureDataset> featureDatasetList = new List<IFeatureDataset>();
            while (featureDataset != null)
            {
                featureDatasetList.Add(featureDataset);
                featureDataset = dataset.Next() as IFeatureDataset;
            }
            return featureDatasetList;
        }

/// <summary>
/// 获取所有要素类
/// </summary>
/// <param name="featureDataset">要素集</param>
/// <returns>要素类列表</returns>
public static List<IFeatureClass> GetAllFeatureClass(IFeatureDataset featureDataset)
{
    IFeatureClassContainer featureClassContainer = (IFeatureClassContainer)featureDataset;
    IEnumFeatureClass enumFeatureClass = featureClassContainer.Classes;
    IFeatureClass featureClass = enumFeatureClass.Next();

    List<IFeatureClass> featureClassList = new List<IFeatureClass>();
    while (featureClass != null)
    {
        featureClassList.Add(featureClass);
        featureClass = enumFeatureClass.Next();
    }
    return featureClassList;
}

[csharp]

/// <summary>
/// 获取所有要素
/// </summary>
/// <param name="featureClass">要素类</param>
/// <returns>要素列表</returns>
public static List<IFeature> GetAllFeatureClass(IFeatureClass featureClass)
{
    List<IFeature> featureList = new List<IFeature>();
    IFeatureCursor featureCursor = featureClass.Search(null, false);
    IFeature feature = featureCursor.NextFeature();

    while (feature != null)
    {
        featureList.Add(feature);
        feature = featureCursor.NextFeature();
    }
    return featureList;
}