DbSpatialServices.GetMeasure 方法
定义
返回给定值的 M(Measure)坐标。Returns the M (Measure) coordinate of the given value.
重载
| GetMeasure(DbGeography) |
如果其表示点,则返回给定 DbGeography 值的 M(测量)坐标。Returns the M (Measure) coordinate of the given DbGeography value, if it represents a point. |
| GetMeasure(DbGeometry) |
如果其表示点,则返回给定 DbGeometry 值的 M(测量)坐标。Returns the M (Measure) coordinate of the given DbGeometry value, if it represents a point. |
GetMeasure(DbGeography)
如果其表示点,则返回给定 DbGeography 值的 M(测量)坐标。Returns the M (Measure) coordinate of the given DbGeography value, if it represents a point.
public:
abstract Nullable<double> GetMeasure(System::Data::Spatial::DbGeography ^ geographyValue);
public abstract double? GetMeasure (System.Data.Spatial.DbGeography geographyValue);
abstract member GetMeasure : System.Data.Spatial.DbGeography -> Nullable<double>
Public MustOverride Function GetMeasure (geographyValue As DbGeography) As Nullable(Of Double)
参数
- geographyValue
- DbGeography
不需要表示点的地理值。The geography value, which need not represent a point.
返回
给定的 DbGeography 值的 M (测量)坐标。The M (Measure) coordinate of the given DbGeography value.
例外
geographyValue
geographyValue
适用于
GetMeasure(DbGeometry)
如果其表示点,则返回给定 DbGeometry 值的 M(测量)坐标。Returns the M (Measure) coordinate of the given DbGeometry value, if it represents a point.
public:
abstract Nullable<double> GetMeasure(System::Data::Spatial::DbGeometry ^ geometryValue);
public abstract double? GetMeasure (System.Data.Spatial.DbGeometry geometryValue);
abstract member GetMeasure : System.Data.Spatial.DbGeometry -> Nullable<double>
Public MustOverride Function GetMeasure (geometryValue As DbGeometry) As Nullable(Of Double)
参数
- geometryValue
- DbGeometry
不需要表示点的几何图形值。The geometry value, which need not represent a point.
返回
给定的 DbGeometry 值的 M (测量)坐标。The M (Measure) coordinate of the given DbGeometry value.
例外
geometryValue
geometryValue