Класс SqlGeography

The SqlGeography type represents data in a geodetic (round earth) coordinate system.

Иерархия наследования

System. . :: . .Object
  Microsoft.SqlServer.Types..::..SqlGeography

Пространство имен:  Microsoft.SqlServer.Types
Сборка:  Microsoft.SqlServer.Types (в Microsoft.SqlServer.Types.dll)

Синтаксис

'Декларация
<SerializableAttribute> _
<CLSCompliantAttribute(True)> _
<SqlUserDefinedTypeAttribute(Format.UserDefined, IsByteOrdered := False,  _
    MaxByteSize := , IsFixedLength := False)> _
Public NotInheritable Class SqlGeography _
    Implements INullable, IBinarySerialize
'Применение
Dim instance As SqlGeography

[SerializableAttribute]
[CLSCompliantAttribute(true)]
[SqlUserDefinedTypeAttribute(Format.UserDefined, IsByteOrdered = false, 
    MaxByteSize = , IsFixedLength = false)]
public sealed class SqlGeography : INullable, 
    IBinarySerialize

[SerializableAttribute]
[CLSCompliantAttribute(true)]
[SqlUserDefinedTypeAttribute(Format::UserDefined, IsByteOrdered = false, 
    MaxByteSize = , IsFixedLength = false)]
public ref class SqlGeography sealed : INullable, 
    IBinarySerialize

[<SealedAttribute>]
[<SerializableAttribute>]
[<CLSCompliantAttribute(true)>]
[<SqlUserDefinedTypeAttribute(Format.UserDefined, IsByteOrdered = false, 
    MaxByteSize = , IsFixedLength = false)>]
type SqlGeography =  
    class
        interface INullable
        interface IBinarySerialize
    end

public final class SqlGeography implements INullable, IBinarySerialize

Тип SqlGeography обеспечивает доступ к следующим элементам.

Конструкторы

  Имя Описание
Открытый метод SqlGeography Initializes a new instance of the SqlGeography class.

В начало

Свойства

  Имя Описание
Открытое свойство IsNull Determines whether the SqlGeography instance is null.
Открытое свойство Lat Returns the latitude property of the geography instance.
Открытое свойство Long Returns the longitude property of the geography instance.
Открытое свойство M Returns the M (measure) value of the geography instance.
Открытое свойствоСтатический элемент Null Returns a read-only property providing a null instance of the SqlGeography type.
Открытое свойство STSrid Gets or sets id is an integer representing the Spatial Reference Identifier (SRID) of the instance.
Открытое свойство Z Gets the Z (elevation) value of the instance. The semantics of the elevation value are user-defined.

В начало

Методы

  Имя Описание
Открытый метод AsGml Returns the Geography Markup Language (GML) representation of a SqlGeography instance.
Открытый метод AsTextZM Returns the Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation of a SqlGeography instance augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый метод BufferWithTolerance Returns a geometric object representing the union of all point values whose distance from a SqlGeography instance is less than or equal to a specified value, allowing for a specified tolerance.
Открытый метод EnvelopeAngle Returns the maximum angle between the point returned by the EnvelopeCenter method and a point in the geography instance in degrees.
Открытый метод EnvelopeCenter Returns a point that can be used as the center of a bounding circle for the geography instance.
Открытый метод Equals (Производный от Object.)
Открытый метод Filter Offers a fast, index-only intersection method to determine if a geography instance intersects another SqlGeography instance, assuming an index is available.
Защищенный метод Finalize (Производный от Object.)
Открытый методСтатический элемент GeomFromGml Constructs a SqlGeography instance given a representation in the SQL Server subset of the Geography Markup Language (GML).
Открытый метод GetHashCode (Производный от Object.)
Открытый метод GetType (Производный от Object.)
Открытый метод InstanceOf Tests if the SqlGeography instance is the same as the specified type.
Защищенный метод MemberwiseClone (Производный от Object.)
Открытый метод NumRings Returns the total number of rings in a Polygon instance.
Открытый методСтатический элемент Parse Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation.
Открытый методСтатический элемент Point Constructs a SqlGeography instance representing a Point instance from its x and y values and a spatial reference ID (SRID).
Открытый метод Populate Applies a geography type call sequence to IGeographySink object. The call sequence is a set of figures, lines, and points for geography types.
Открытый метод Read Reads a binary representation of a geography type into a SqlGeometry object.
Открытый метод Reduce Returns an approximation of the given geography instance produced by running the Douglas-Peucker algorithm on the instance with the given tolerance.
Открытый метод RingN Returns the specified ring of the SqlGeography instance: 1 ≤ n ≤ NumRings().
Открытый метод STArea Returns the total surface area of a SqlGeography instance.
Открытый метод STAsBinary Returns the Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation of a SqlGeography instance.
Открытый метод STAsText Returns the Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation of a SqlGeography instance.
Открытый метод STBuffer Returns a geography object that represents the union of all points whose distance from a SqlGeography instance is less than or equal to a specified value.
Открытый метод STDifference Returns an object representing the points from one SqlGeography instance that do not lie within another SqlGeography instance.
Открытый метод STDimension Returns the maximum dimension of a SqlGeography instance
Открытый метод STDisjoint Determines whether the calling SqlGeography instance is spatially disjoint from the specified SqlGeography instance.
Открытый метод STDistance Returns the shortest distance between a point in a SqlGeography instance and a point in another SqlGeography instance.
Открытый метод STEndPoint Returns the end point of a SqlGeography instance.
Открытый метод STEquals Determines whether the specified SqlGeography instance has the same point set as the calling SqlGeography instance.
Открытый методСтатический элемент STGeomCollFromText Returns a geography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STGeomCollFromWKB Returns a GeometryCollection instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Открытый метод STGeometryN Returns a specified geography element in a GeometryCollection or one of its subtypes.
Открытый метод STGeometryType Returns the Open Geospatial Consortium (OGC) type name represented by a geography instance.
Открытый методСтатический элемент STGeomFromText Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STGeomFromWKB Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Открытый метод STIntersection Returns an object representing the points where a SqlGeography instance intersects another SqlGeography instance.
Открытый метод STIntersects Determines whether the current SqlGeography instance intersects with the specified SqlGeography.
Открытый метод STIsClosed Determines whether the calling SqlGeography instance is closed.
Открытый метод STIsEmpty Determines whether the SqlGeography instance is empty.
Открытый метод STLength Returns the total length of the elements in a SqlGeography instance or the SqlGeography instances within a GeometryCollection.
Открытый методСтатический элемент STLineFromText Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STLineFromWKB Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STMLineFromText Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STMLineFromWKB Returns a SqlGeography MultiLineString instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Открытый методСтатический элемент STMPointFromText Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STMPointFromWKB Returns a SqlGeography MultiPoint instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Открытый методСтатический элемент STMPolyFromText Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STMPolyFromWKB Returns a SqlGeography MultiPolygon instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Открытый метод STNumGeometries Returns the number of geometries that make up a SqlGeography instance.
Открытый метод STNumPoints Returns the total number of points in each of the figures in a SqlGeography instance
Открытый методСтатический элемент STPointFromText Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STPointFromWKB Returns a SqlGeography Point instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Открытый метод STPointN Returns the specified point in a SqlGeography instance.
Открытый методСтатический элемент STPolyFromText Returns a SqlGeography instance from an Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation augmented with any Z (elevation) and M (measure) values carried by the instance.
Открытый методСтатический элемент STPolyFromWKB Returns a SqlGeography Polygon instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Открытый метод STStartPoint Returns the start point of a SqlGeography instance.
Открытый метод STSymDifference Returns an object representing all points that are either in one SqlGeography instance or another SqlGeography instance, but not those points that lie in both instances.
Открытый метод STUnion Returns an object representing the union of a SqlGeography instance with another SqlGeography instance.
Открытый метод ToString Returns the Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation of a SqlGeography instance augmented with any Z (elevation) and M (measure) values carried by the instance. (Переопределяет Object. . :: . .ToString() () () ().)
Открытый метод Write Writes a SqlGeography object to a binary stream.

В начало

Замечания

SQL Server 2008 supports a set of methods for the geography spatial data type. These methods include methods on geography that are defined by the Open Geospatial Consortium (OGC) standard and a set of Microsoft extensions to that standard.

Безопасность многопоточности

Любые открытые статический (Shared в Visual Basic) элементы этого типа потокобезопасны. Потокобезопасность с элементами экземпляров не гарантируется.

См. также

Справочник

Пространство имен Microsoft.SqlServer.Types

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