Determines whether the SqlGeography instance is null.
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 IsNull As Boolean
Get
用法
Dim instance As SqlGeography
Dim value As Boolean
value = instance.IsNull
public bool IsNull { get; }
public:
virtual property bool IsNull {
bool get () sealed;
}
abstract IsNull : bool
override IsNull : bool
final function get IsNull () : boolean
属性值
类型：System.Boolean
A bool value that specifies whether the SqlGeography instance is null. If true, the instance is null. Otherwise, false.