DatabaseAttribute 类

定义

指定表示数据库的类的特定属性。Specifies certain attributes of a class that represents a database.

public ref class DatabaseAttribute sealed : Attribute
[System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false)]
public sealed class DatabaseAttribute : Attribute
[<System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false)>]
type DatabaseAttribute = class
    inherit Attribute
Public NotInheritable Class DatabaseAttribute
Inherits Attribute
继承
DatabaseAttribute
属性

注解

可以将属性应用于 DatabaseAttribute 任何强类型 DataContext 声明。You can apply the DatabaseAttribute attribute to any strongly typed DataContext declaration.

DatabaseAttribute 属性是可选项。The DatabaseAttribute attribute is optional. 如果使用该属性,则必须使用 Name 属性来提供名称。If you use it, you must use the Name property to supply a name.

如果不应用此属性,并且连接未指定名称,则假定该数据库具有与类相同的名称 DataContextIf you do not apply this attribute and the connection does not specify a name, the database is assumed to have the same name as the DataContext class.

构造函数

DatabaseAttribute()

初始化 DatabaseAttribute 类的新实例。Initializes a new instance of the DatabaseAttribute class.

属性

Name

获取或设置数据库的名称。Gets or sets the name of the database.

TypeId

在派生类中实现时,获取此 Attribute 的唯一标识符。When implemented in a derived class, gets a unique identifier for this Attribute.

(继承自 Attribute)

方法

Equals(Object)

返回一个值,该值指示此实例是否与指定的对象相等。Returns a value that indicates whether this instance is equal to a specified object.

(继承自 Attribute)
GetHashCode()

返回此实例的哈希代码。Returns the hash code for this instance.

(继承自 Attribute)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
IsDefaultAttribute()

在派生类中重写时,指示此实例的值是否是派生类的默认值。When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(继承自 Attribute)
Match(Object)

当在派生类中重写时,返回一个指示此实例是否等于指定对象的值。When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(继承自 Attribute)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(继承自 Object)

显式接口实现

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

将一组名称映射为对应的一组调度标识符。Maps a set of names to a corresponding set of dispatch identifiers.

(继承自 Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

检索对象的类型信息,然后可以使用该信息获取接口的类型信息。Retrieves the type information for an object, which can be used to get the type information for an interface.

(继承自 Attribute)
_Attribute.GetTypeInfoCount(UInt32)

检索对象提供的类型信息接口的数量(0 或 1)。Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(继承自 Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

提供对某一对象公开的属性和方法的访问。Provides access to properties and methods exposed by an object.

(继承自 Attribute)

适用于