arcgis二次开发要素选择代码
时间: 2023-08-22 10:10:05 浏览: 69
以下是使用 ArcObjects 进行要素选择的示例代码:
```c#
//获取要素图层
IFeatureLayer featureLayer = GetFeatureLayer();
//创建空间查询过滤器
ISpatialFilter spatialFilter = new SpatialFilterClass();
spatialFilter.Geometry = GetSelectionGeometry(); //获取选择区域的几何图形
spatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects; //设置空间关系
spatialFilter.SubFields = featureLayer.FeatureClass.OIDFieldName; //设置返回字段
//执行要素选择
IFeatureSelection featureSelection = featureLayer as IFeatureSelection;
featureSelection.SelectFeatures(spatialFilter, esriSelectionResultEnum.esriSelectionResultNew, false);
//获取选择的要素
ISelectionSet selectionSet = featureSelection.SelectionSet;
if (selectionSet.Count > 0)
{
//遍历选择的要素
ICursor cursor;
selectionSet.Search(null, false, out cursor);
IFeatureCursor featureCursor = cursor as IFeatureCursor;
IFeature feature = null;
while ((feature = featureCursor.NextFeature()) != null)
{
//处理每个选择的要素
//...
}
}
```
其中,`GetFeatureLayer()` 和 `GetSelectionGeometry()` 方法需要根据实际情况进行实现,用于获取要素图层和选择区域的几何图形。
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