Gets the Boolean property that specifies whether the system data type allows null values.
命名空间: Microsoft.SqlServer.Management.Smo
程序集: Microsoft.SqlServer.Smo (in microsoft.sqlserver.smo.dll)
语法
声明
Public ReadOnly Property AllowNulls As Boolean
public bool AllowNulls { get; }
public:
property bool AllowNulls {
bool get ();
}
/** @property */
public boolean get_AllowNulls ()
public function get AllowNulls () : boolean
属性值
A Boolean value that specifies whether the system data type allows null values. If True, the system data type allows null values. If False, the system data type does not allow null values.
备注
仅 Microsoft .NET Framework 的 2.0 版本支持此命名空间、类或成员。
示例
How to: Construct a DataType Object by Using the Default Constructor in Visual Basic .NET
How to: Construct a DataType Object with the Specification in the Constructor in Visual Basic .NET
线程安全
Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
平台
开发平台
有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。
目标平台
有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。
请参阅
参考
SystemDataType Class
SystemDataType Members
Microsoft.SqlServer.Management.Smo Namespace