SqlGeometry.STNumGeometries 方法
Returns the number of SqlGeometry that comprise a SqlGeometry instance.
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 STNumGeometries As SqlInt32
用法
Dim instance As SqlGeometry
Dim returnValue As SqlInt32
returnValue = instance.STNumGeometries()
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public SqlInt32 STNumGeometries()
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public:
SqlInt32 STNumGeometries()
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)>]
member STNumGeometries : unit -> SqlInt32
public function STNumGeometries() : SqlInt32
返回值
类型：System.Data.SqlTypes.SqlInt32
Returns 1 if the SqlGeometry instance is not a MultiPoint, MultiLineString, MultiPolygon, or GeometryCollection instance, and 0 if the SqlGeometry instance is empty.
注释
If a geometry collection has nested empty elements, STNumGeometries will not return 0. Though the elements in the geometry collection instance are empty, the instance itself is not an empty set.