SqlGeographyBuilder 类

Constructs instances of SqlGeography objects by using IGeographySink interface.

继承层次结构

System.Object
  Microsoft.SqlServer.Types.SqlGeographyBuilder

命名空间：  Microsoft.SqlServer.Types
程序集：  Microsoft.SqlServer.Types（在 Microsoft.SqlServer.Types.dll 中）

语法

声明
<CLSCompliantAttribute(True)> _
Public Class SqlGeographyBuilder _
    Implements IGeographySink110, IGeographySink
用法
Dim instance As SqlGeographyBuilder

[CLSCompliantAttribute(true)]
public class SqlGeographyBuilder : IGeographySink110, 
    IGeographySink

[CLSCompliantAttribute(true)]
public ref class SqlGeographyBuilder : IGeographySink110, 
    IGeographySink

[<CLSCompliantAttribute(true)>]
type SqlGeographyBuilder =  
    class 
        interface IGeographySink110 
        interface IGeographySink 
    end

public class SqlGeographyBuilder implements IGeographySink110, IGeographySink

SqlGeographyBuilder 类型公开以下成员。

构造函数

	名称	说明
	SqlGeographyBuilder	Constructs a SqlGeographyBuilder object.

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属性

	名称	说明
	ConstructedGeography	Retrieves the constructed spatial geography object.

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方法

	名称	说明
	AddCircularArc(Double, Double, Double, Double)	Adds a circular arc to the path.
	AddCircularArc(Double, Double, Nullable<Double>, Nullable<Double>, Double, Double, Nullable<Double>, Nullable<Double>)	Adds a circular arc to the path.
	AddLine(Double, Double)	Constructs additional points in a geography type figure.
	AddLine(Double, Double, Nullable<Double>, Nullable<Double>)	Constructs additional points in a geography type figure.
	BeginFigure(Double, Double)	Starts the call sequence for a geography figure.
	BeginFigure(Double, Double, Nullable<Double>, Nullable<Double>)	Starts the call sequence for a geography figure.
	BeginGeography	Initializes a call sequence for a geography type.
	EndFigure	Finishes a call sequence for a geography figure.
	EndGeography	Finishes a call sequence for a geography type.
	Equals	（从 Object 继承。）
	Finalize	（从 Object 继承。）
	GetHashCode	（从 Object 继承。）
	GetType	（从 Object 继承。）
	MemberwiseClone	（从 Object 继承。）
	SetSrid	Sets the Spatial Reference Identifier (SRID) for a geography type call sequence.
	ToString	（从 Object 继承。）

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注释

Throws FormatException for an invalid call sequence or when a call sequence is incomplete when ConstructedGeography() is invoked.

示例

The following example constructs a SqlGeometry object from a MultiLineString.

SqlGeographyBuilder b = new SqlGeographyBuilder();

b.SetSrid(4326);

b.BeginGeography(OpenGisGeographyType.MultiLineString);

b.BeginGeography(OpenGisGeographyType.LineString);

b.BeginFigure(-122.358, 47.653);

b.AddLine(-122.348, 47.649);

b.EndFigure();

b.EndGeography();

b.BeginGeography(OpenGisGeographyType.LineString);

b.BeginFigure(-118.481, 48.328);

b.AddLine(-119.002, 47.324);

b.EndFigure();

b.EndGeography();

b.EndGeography();

SqlGeography g = b.ConstructedGeography();

线程安全

此类型的任何公共 static（在 Visual Basic 中为 Shared） 成员都是线程安全的。不保证所有实例成员都是线程安全的。

请参阅

参考

Microsoft.SqlServer.Types 命名空间