Returns the exterior ring of a SqlGeometry instance that is a polygon.
命名空間： Microsoft.SqlServer.Types
組件： Microsoft.SqlServer.Types (在 Microsoft.SqlServer.Types.dll 中)
語法
'宣告
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := True)> _
Public Function STExteriorRing As SqlGeometry
'用途
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
傳回值
型別：Microsoft.SqlServer.Types.SqlGeometry
A SqlGeometry object that represents the exterior ring of the calling instance.
備註
This method returns nullnull 參考 (在 Visual Basic 中為 Nothing) if the SqlGeometry instance is not a polygon.