SqlGeography.RingN Method (Int32)
Returns the specified ring of the SqlGeography instance: 1 ≤ n ≤ NumRings().
Assembly: Microsoft.SqlServer.Types (in Microsoft.SqlServer.Types.dll)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)] public SqlGeography RingN( int n )
An int expression between 1 and the number of rings in a polygon instance.
If the value of the ring index n is less than 1, this method throws an ArgumentOutOfRangeException. The ring index value must be greater than or equal to 1 and should be less than or equal to the number returned by NumRings.