/// <summary>
/// 是否存在记录
/// </summary>
/// <param name="filter"></param>
/// <returns></returns>
public bool HasRecord(ZFilter filter)
{
using (ZFeatureCursor cursor = Search(filter))
{
return(cursor.NextFeature() != null);
}
}
/// <summary>
/// Delete the Rows in the database selected by the specified query.
/// </summary>
/// <param name="filter"></param>
public bool Delete(ZFilter filter)
{
try
{
ITable table = featureClass as ITable;
table.DeleteSearchedRows(filter.Value);
return(true);
}
catch {
return(false);
}
}
/// <summary>
/// 复制数据到另一张表
/// </summary>
/// <param name="outZWorkspace">目标工作空间</param>
/// <param name="name">目标图层名</param>
/// <param name="filter">查询条件</param>
public void CopyTo(ZWorkspace outZWorkspace, string name, ZFilter filter)
{
// 数据源
IFeatureClassName inputFClassName = ((IDataset)featureClass).FullName as IFeatureClassName;
// 目标数据集
IDataset outDataSet = outZWorkspace.workspace as IDataset;
IWorkspaceName outWorkspaceName = outDataSet.FullName as IWorkspaceName;
// 目标图层
IFeatureClassName outputFClassName = new FeatureClassNameClass();
IDatasetName dataSetName = outputFClassName as IDatasetName;
dataSetName.WorkspaceName = outWorkspaceName;
dataSetName.Name = name;
// 导出
FeatureDataConverterClass converter = new FeatureDataConverterClass();
converter.ConvertFeatureClass(inputFClassName, filter.Value, null, outputFClassName, null, featureClass.Fields, "", 100, 0);
// 释放资源
Marshal.ReleaseComObject(converter);
}
/// <summary>
/// Delete the Rows in the database selected by the specified query.
/// </summary>
/// <param name="where"></param>
/// <param name="zGeo"></param>
/// <param name="rel"></param>
public bool Delete(string where = "1=1", ZGeometry zGeo = null, SpatialRelEnum rel = SpatialRelEnum.esriSpatialRelIntersects)
{
ZFilter filter = new ZFilter(where, zGeo, featureClass.ShapeFieldName, rel);
return(Delete(filter));
}
/// <summary>
/// Returns a cursor that can be used to update features selected by the specified
/// </summary>
/// <param name="filter"></param>
/// <param name="useBuffering"></param>
/// <returns></returns>
public ZFeatureCursor Update(ZFilter filter, bool useBuffering)
{
IFeatureCursor cursor = featureClass.Update(filter.Value, useBuffering);
return(new ZFeatureCursor(cursor));
}
/// <summary>
/// Returns a cursor that can be used to update features selected by the specified
/// </summary>
/// <param name="filter"></param>
/// <param name="useBuffering"></param>
/// <returns></returns>
public ZFeatureCursor Update(string where = "1=1", ZGeometry zGeo = null, SpatialRelEnum rel = SpatialRelEnum.esriSpatialRelIntersects, bool useBuffering = true)
{
ZFilter filter = new ZFilter(where, zGeo, featureClass.ShapeFieldName, rel);
return(Update(filter, useBuffering));
}
/// <summary>
/// 空间属性查询
/// </summary>
/// <param name="where"></param>
/// <param name="geometry"></param>
/// <returns></returns>
public ZFeatureCursor Search(ZFilter filter)
{
IFeatureCursor cursor = featureClass.Search(filter.Value, false);
return(new ZFeatureCursor(cursor));
}
/// <summary>
/// The number of features selected by the specified query.
/// </summary>
/// <param name="filter"></param>
/// <returns></returns>
public int RecordCount(ZFilter filter)
{
return(featureClass.FeatureCount(filter.Value));
}