DbSpatialServices.GeographyPointFromText(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 DbGeography 点值。

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

参数

pointWellKnownText
String

包含知名地理值的文本表示形式的字符串。

coordinateSystemId
Int32

新建 DbGeography 值应使用的坐标系的标识符。

返回

通过指定坐标系统标识符 (SRID) 由知名文本值定义的新的 DbGeographyDefaultCoordinateSystemId

例外

pointWellKnownText

coordinateSystemId

适用于