Método SqlGeometry.STPointN
Returns a specified point in a SqlGeometry instance.
Namespace: Microsoft.SqlServer.Types
Assembly: Microsoft.SqlServer.Types (em Microsoft.SqlServer.Types.dll)
Sintaxe
'Declaração
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := True)> _
Public Function STPointN ( _
n As Integer _
) As SqlGeometry
'Uso
Dim instance As SqlGeometry
Dim n As Integer
Dim returnValue As SqlGeometry
returnValue = instance.STPointN(n)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public SqlGeometry STPointN(
int n
)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public:
SqlGeometry^ STPointN(
int n
)
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)>]
member STPointN :
n:int -> SqlGeometry
public function STPointN(
n : int
) : SqlGeometry
Parâmetros
- n
Tipo: System.Int32
An int expression between 1 and the number of points in the SqlGeometry instance.
Valor de retorno
Tipo: Microsoft.SqlServer.Types.SqlGeometry
A SqlGeometry that represents the specified point in the calling instance.
Comentários
If a SqlGeometry instance is user created, STPointN returns the point specified by expression by ordering the points in the order in which they were originally input.
If a SqlGeometry instance was constructed by the system, STPointN returns the point specified by expression by ordering all the points in the same order they would be output: first by geometry, then by ring within the geometry (if appropriate), and then by point within the ring. This order is deterministic.
If this method is called with a value less than 1, it throws an ArgumentOutOfRangeException.
If this method is called with a value greater than the number of points in the instance, it returns null.