Check 類別

The Check object represents a SQL Server check constraint. 

繼承階層

System.Object
  Microsoft.SqlServer.Management.Smo.SmoObjectBase
    Microsoft.SqlServer.Management.Smo.SqlSmoObject
      Microsoft.SqlServer.Management.Smo.NamedSmoObject
        Microsoft.SqlServer.Management.Smo.ScriptNameObjectBase
          Microsoft.SqlServer.Management.Smo.Check

命名空間：  Microsoft.SqlServer.Management.Smo
組件：  Microsoft.SqlServer.Smo (在 Microsoft.SqlServer.Smo.dll 中)

語法

'宣告
Public NotInheritable Class Check _
    Inherits ScriptNameObjectBase _
    Implements ICreatable, IDroppable, IRenamable, IMarkForDrop,  _
    IAlterable, IExtendedProperties, IScriptable, ISfcSupportsDesignMode
'用途
Dim instance As Check

public sealed class Check : ScriptNameObjectBase, 
    ICreatable, IDroppable, IRenamable, IMarkForDrop, IAlterable, 
    IExtendedProperties, IScriptable, ISfcSupportsDesignMode

public ref class Check sealed : public ScriptNameObjectBase, 
    ICreatable, IDroppable, IRenamable, IMarkForDrop, IAlterable, 
    IExtendedProperties, IScriptable, ISfcSupportsDesignMode

[<SealedAttribute>]
type Check =  
    class 
        inherit ScriptNameObjectBase 
        interface ICreatable 
        interface IDroppable 
        interface IRenamable 
        interface IMarkForDrop 
        interface IAlterable 
        interface IExtendedProperties 
        interface IScriptable 
        interface ISfcSupportsDesignMode 
    end

public final class Check extends ScriptNameObjectBase implements ICreatable, IDroppable, IRenamable, IMarkForDrop, IAlterable, IExtendedProperties, IScriptable, ISfcSupportsDesignMode

Check 型別公開下列成員。

建構函式

	名稱	說明
	Check()	Initializes a new instance of the Check class.
	Check(SqlSmoObject, String)	Initializes a new instance of the Check class, which is owned by the specified parent object and has the specified name.

上層

屬性

	名稱	說明
	CreateDate	Gets the date and time that the check constraint was created.
	DateLastModified	Gets the date and time that the check constraint was last modified.
	ExtendedProperties	Represents a collection of ExtendedProperty objects. Each ExtendedProperty object represents an extended property on the Check object.
	ID	Gets the database ID value that uniquely identifies the check constraint.
	IsChecked	Gets the Boolean property value that specifies whether the constraint was enabled without checking existing rows, so constraint may not hold for all rows
	IsEnabled	Gets the Boolean property value that specifies whether the check constraint is enabled.
	IsFileTableDefined	Gets a value that specifies whether the check constraint defines a file table.
	IsSystemNamed	Gets the Boolean property value that specifies whether the check constraint was named automatically by Microsoft SQL Server or named by the database object creator.
	Name	Gets or sets the name of the check constraint. (覆寫 NamedSmoObject.Name。)
	NotForReplication	Gets the Boolean property value that specifies whether the check constraint is available for replication or not.
	Parent	Gets the SqlSmoObject object that is the parent of the Check object.
	Properties	Gets a collection of Property objects that represent the object properties. (繼承自 SqlSmoObject。)
	State	Gets the state of the referenced object. (繼承自 SmoObjectBase。)
	Text	Gets or sets the Transact-SQL statement that defines the check constraint.
	Urn	Gets the Uniform Resource Name (URN) address value that uniquely identifies the object. (繼承自 SqlSmoObject。)
	UserData	Gets or sets user-defined data associated with the referenced object. (繼承自 SmoObjectBase。)

上層

方法

	名稱	說明
	Alter	Updates any Check object property changes on an instance of Microsoft SQL Server.
	Create	Creates a check constraint on the instance of SQL Server as defined by the Check object.
	Discover	Discovers a list of type Object. (繼承自 SqlSmoObject。)
	Drop	Drops the check constraint.
	Equals	(繼承自 Object。)
	FormatSqlVariant	Formats an object as SqlVariant type. (繼承自 SqlSmoObject。)
	GetContextDB	Gets the context database that is associated with this object. (繼承自 SqlSmoObject。)
	GetDBName	Gets the database name that is associated with the object. (繼承自 SqlSmoObject。)
	GetHashCode	(繼承自 Object。)
	GetPropValue	Gets a property value of the SqlSmoObject object. (繼承自 SqlSmoObject。)
	GetPropValueOptional	Gets a property value of the SqlSmoObject object. (繼承自 SqlSmoObject。)
	GetPropValueOptionalAllowNull	Gets a property value of the SqlSmoObject object. (繼承自 SqlSmoObject。)
	GetServerObject	Gets the server of the SqlSmoObject object. (繼承自 SqlSmoObject。)
	GetType	(繼承自 Object。)
	Initialize()	Initializes the object and forces the properties be loaded. (繼承自 SqlSmoObject。)
	Initialize(Boolean)	Initializes the object and forces the properties be loaded. (繼承自 SqlSmoObject。)
	IsObjectInitialized	Verifies whether the object has been initialized. (繼承自 SqlSmoObject。)
	IsObjectInSpace	Verifies whether the object is isolated or connected to the instance of SQL Server. (繼承自 SqlSmoObject。)
	MarkForDrop	Marks the foreign key to be dropped next time its parent Table object is altered by the Alter method.
	Refresh	Refreshes the script name. (繼承自 ScriptNameObjectBase。)
	Rename	Marks the foreign key to be dropped next time its parent Table object is altered by the Alter method.
	Script()	Generates a Transact-SQL script that can be used to re-create the check constraint.
	Script(ScriptingOptions)	Generates a Transact-SQL script that can be used to re-create the check constraint as specified by the script options.
	SetParentImpl	Sets the parent of the SqlSmoObject to the newParent parameter. (繼承自 SqlSmoObject。)
	ToString	Returns a String that represents the referenced object. (繼承自 SqlSmoObject。)
	Validate	Validates the state of an object. (繼承自 SmoObjectBase。)

上層

事件

	名稱	說明
	PropertyChanged	Represents the event that occurs when a property is changed. (繼承自 SqlSmoObject。)
	PropertyMetadataChanged	Represents the event that occurs when property metadata changes. (繼承自 SqlSmoObject。)

上層

明確 繼承 實作

	名稱	說明
	IAlienObject.Discover	Discovers any dependencies. 不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。)
	IAlienObject.GetDomainRoot	Returns the root of the domain. (繼承自 SqlSmoObject。)
	IAlienObject.GetParent	Gets the parent of this object. 不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。)
	IAlienObject.GetPropertyType	Gets the type of the specified property. (繼承自 SqlSmoObject。)
	IAlienObject.GetPropertyValue	Gets the value of the specified property. (繼承自 SqlSmoObject。)
	IAlienObject.GetUrn	Gets the Unified Resource Name (URN) of the object. 不要直接在程式碼中參照此成員。其支援 SQL Server 基礎結構。 (繼承自 SqlSmoObject。)
	IAlienObject.Resolve	Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object. (繼承自 SqlSmoObject。)
	IAlienObject.SetObjectState	Sets the object state to the specified SfcObjectState value. (繼承自 SqlSmoObject。)
	IAlienObject.SetPropertyValue	Sets the property value. (繼承自 SqlSmoObject。)
	ISfcPropertyProvider.GetPropertySet	Gets the interface reference to the set of properties of this object. (繼承自 SqlSmoObject。)
	ISfcSupportsDesignMode.IsDesignMode	Gets a Boolean value that indicates whether the object supports design mode. 僅供參考之用。不支援。我們無法保證未來的相容性。

上層

備註

To get Check object properties, users can be a member of the public fixed server role.

To set Check object properties and run the Alter method, users must have ALTER permission on the parent table or column, or be a member of the db_owner fixed database role.

To create a check constraint, users must have ALTER permission on the parent table, or be a member of the db_owner fixed database role.

To drop a check constraint, users must have ALTER permission on the parent table, or be a member of the db_owner fixed database role.

Thread Safety

此型別的任何公用靜態 (在 Microsoft Visual Basic 為共用) 成員具備多執行緒作業安全。並非所有的執行個體成員都是安全執行緒。

執行緒安全性

這個型別的任何公用 static (在 Visual Basic 中為 Shared) 成員都是執行緒安全的。並不是所有的執行個體成員都保證可以用於所有的執行緒。

請參閱

參考

Microsoft.SqlServer.Management.Smo 命名空間

其他資源

使用資料庫物件

CHECK 條件約束

CREATE TABLE (Transact-SQL)