通过

M 属性

Gets the M (measure) value of the SqlGeometry instance. The semantics of the measure value are user-defined.

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 M As SqlDouble
    Get
用法
Dim instance As SqlGeometry
Dim value As SqlDouble

value = instance.M

public SqlDouble M { get; }

public:
property SqlDouble M {
    SqlDouble get ();
}

member M : SqlDouble

function get M () : SqlDouble

属性值

类型：System.Data.SqlTypes. . :: . .SqlDouble
A SqlDouble value containing the measure of the SqlGeometry value.

注释

The value of this property is null Nothing nullptr unit null 引用（在 Visual Basic 中为 Nothing） if the SqlGeometry instance is not a Point, as well as for any Point instance for which it is not set.

This property is read-only.

M values are not used in any calculations made by the library and will not be carried through any library calculations.