通过

STExteriorRing 方法

Returns the exterior ring of a SqlGeometry instance that is a polygon.

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

语法

声明
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := True)> _
Public Function STExteriorRing As SqlGeometry
用法
Dim instance As SqlGeometry
Dim returnValue As SqlGeometry

returnValue = instance.STExteriorRing()

[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public SqlGeometry STExteriorRing()

[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public:
SqlGeometry^ STExteriorRing()

[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)>]
member STExteriorRing : unit -> SqlGeometry 

public function STExteriorRing() : SqlGeometry

返回值

类型：Microsoft.SqlServer.Types. . :: . .SqlGeometry
A SqlGeometry object that represents the exterior ring of the calling instance.

注释

This method returns null Nothing nullptr unit null 引用（在 Visual Basic 中为 Nothing） if the SqlGeometry instance is not a polygon.