mapxtreme_mapxtreme编程_mapxtreme 售价(3)

5、通过如下方式引用feature对象 ((MapInfo.Geometry.LegacyText)feature.Geometry).Caption

二、通过search方法搜索

1、catalog的search方法可以按条件搜索图元（第一个图元） // also uses search for feature Feature fDEU = _catalog.SearchForFeature("europe", MapInfo.Data.SearchInfoFactory.SearchWhere ("Country='DEU'"));

2、先利用SearchInfoFactory构造一个SearchInfo对象，指定其搜索属性： SearchAll： Returns all the rows。 SearchNearest： Returns the rows with table geometries that are closest to the given search point。 SearchWhere： Returns the rows specified by the given where Clause。 SearchWithinDistance： Returns the rows where the table geometry is contained within a buffer of the search point, rectangle or geometry。 SearchWithinFeature： Returns the rows where the table geometry is contained within the search features's geometry。 SearchWithinGeometry： Returns the rows where the table geometry is contained within the search geometry。

SearchWithinRect： Returns the rows where the table geometry intersects the given rectangle。 SearchIntersectsFeature： Returns the rows where the table geometry intersects with the search features's geometry。 SearchIntersectsGeometry： Returns the rows where the table geometry intersects with the search geometry。 SearchWithinScreenRadius： Creates a SearchInfo that returns the rows where the table geometry intersects a screen circle。 SearchWithinScreenRect：Returns the rows where the table geometry intersects the given screen rectangle

3、再调用search方法，将结果放到 MultiResultSetFeatureCollection IResultSetFeatureCollection

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