DbSpatialServices.GeometryPolygonFromText(String, Int32) 方法

定义

创建基于指定已知文本值和坐标系统标识符 (SRID) 的新 DbGeometry 多多边形值。Creates a new DbGeometry polygon value based on the specified well-known text value and coordinate system identifier (SRID).

public:
 abstract System::Data::Spatial::DbGeometry ^ GeometryPolygonFromText(System::String ^ polygonWellKnownText, int coordinateSystemId);
public abstract System.Data.Spatial.DbGeometry GeometryPolygonFromText (string polygonWellKnownText, int coordinateSystemId);
abstract member GeometryPolygonFromText : string * int -> System.Data.Spatial.DbGeometry
Public MustOverride Function GeometryPolygonFromText (polygonWellKnownText As String, coordinateSystemId As Integer) As DbGeometry

参数

polygonWellKnownText
String

包含知名几何图形值的文本表示形式的字符串。A string that contains a well-known text representation of the geometry value.

coordinateSystemId
Int32

新建 DbGeometry 值应使用的坐标系的标识符。The identifier of the coordinate system that the new DbGeometry value should use.

返回

DbGeometry

通过指定坐标系统标识符 (SRID) 由知名文本值定义的新的 DbGeometryDefaultCoordinateSystemIdA new DbGeometry value as defined by the well-known text value with the specified coordinate system identifier (SRID) (DefaultCoordinateSystemId).

例外

polygonWellKnownText

coordinateSystemId

适用于