Column.DefaultConstraint Property
Gets or sets a default value for the column.
命名空間: Microsoft.SqlServer.Management.Smo
組件: Microsoft.SqlServer.Smo (in microsoft.sqlserver.smo.dll)
語法
'宣告
Public ReadOnly Property DefaultConstraint As DefaultConstraint
public DefaultConstraint DefaultConstraint { get; }
public:
property DefaultConstraint^ DefaultConstraint {
DefaultConstraint^ get ();
}
/** @property */
public DefaultConstraint get_DefaultConstraint ()
public function get DefaultConstraint () : DefaultConstraint
屬性值
A DefaultConstraint value that specifies a default value for the column.
備註
The DefaultConstraint property specifies a default text value for the column. When no value is supplied by the user the default text value is inserted into a row in the table. The text value can be set by setting the Text property of the DefaultConstraint object that is referenced by the DefaultConstraint property.
只有 Microsoft .NET Framework 2.0 版支援此命名空間、類別或成員。
範例
How to: Create, Alter, and Remove a Table in Visual Basic .NET
執行緒安全性
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
開發平台
如需受支援的平台清單,請參閱<安裝 SQL Server 2005 的硬體和軟體需求>。
目標平台
如需受支援的平台清單,請參閱<安裝 SQL Server 2005 的硬體和軟體需求>。
請參閱
參考
Column Class
Column Members
Microsoft.SqlServer.Management.Smo Namespace
其他資源
CREATE TABLE (Transact-SQL)
條件約束
Working with Database Objects