Returns the longitude property of the geography instance.
命名空间： Microsoft.SqlServer.Types
程序集： Microsoft.SqlServer.Types（在 Microsoft.SqlServer.Types.dll 中）
语法
声明
Public ReadOnly Property Long As SqlDouble
Get
用法
Dim instance As SqlGeography
Dim value As SqlDouble
value = instance.Long
public SqlDouble Long { get; }
public:
property SqlDouble Long {
SqlDouble get ();
}
member Long : SqlDouble
function get Long () : SqlDouble
属性值
类型：System.Data.SqlTypes.SqlDouble
A SqlDouble value that specifies the longitude.
注释
In the OpenGIS model, Long is defined only on geography instances composed of a single point. This property will return NULL if geography instances contain more than a single point. This property is precise and read-only.