STIsClosed 方法
Determines whether the calling SqlGeography instance is closed.
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 := False)> _
Public Function STIsClosed As SqlBoolean
用法
Dim instance As SqlGeography
Dim returnValue As SqlBoolean
returnValue = instance.STIsClosed()
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public SqlBoolean STIsClosed()
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public:
SqlBoolean STIsClosed()
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)>]
member STIsClosed : unit -> SqlBoolean
public function STIsClosed() : SqlBoolean
返回值
类型：System.Data.SqlTypes. . :: . .SqlBoolean
A SqlBoolean value indicating whether the start and end points of the SqlGeography instance are the same. Returns true if both points are the same. Otherwise, false.
注释
This method returns false if any figures of a geography instance are points, or if the instance is empty.
This method returns true for geography collection types if each contained SqlGeography instance is closed.
All Polygon instances are considered closed.