STGeometryN 方法
Returns a specified geography element in a GeometryCollection or one of its subtypes.
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 STGeometryN ( _
n As Integer _
) As SqlGeography
用法
Dim instance As SqlGeography
Dim n As Integer
Dim returnValue As SqlGeography
returnValue = instance.STGeometryN(n)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public SqlGeography STGeometryN(
int n
)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public:
SqlGeography^ STGeometryN(
int n
)
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)>]
member STGeometryN :
n:int -> SqlGeography
public function STGeometryN(
n : int
) : SqlGeography
参数
- n
类型：System. . :: . .Int32
An int expression between 1 and the number of SqlGeography instances in the GeometryCollection.
返回值
类型：Microsoft.SqlServer.Types. . :: . .SqlGeography
A SqlGeography element from the specified instance in the GeometryCollection.
注释
When this method is used on a subtype of a GeometryCollection, such as MultiPoint or MultiLineString, this method returns the SqlGeography instance if called with N=1.
This method returns null if the parameter is larger than the result of STNumGeometries and will throw an ArgumentOutOfRangeException if the expression parameter is less than 1.