EdmScalarPropertyAttribute 类

定义

一个属性 (Attribute),指示属性 (property) 表示标量属性 (property)。Attribute that indicates that the property represents a scalar property.

public ref class EdmScalarPropertyAttribute sealed : System::Data::Objects::DataClasses::EdmPropertyAttribute
[System.AttributeUsage(System.AttributeTargets.Property)]
public sealed class EdmScalarPropertyAttribute : System.Data.Objects.DataClasses.EdmPropertyAttribute
[<System.AttributeUsage(System.AttributeTargets.Property)>]
type EdmScalarPropertyAttribute = class
    inherit EdmPropertyAttribute
Public NotInheritable Class EdmScalarPropertyAttribute
Inherits EdmPropertyAttribute
继承
EdmScalarPropertyAttribute
属性

注解

IsNullableEntityKeyProperty 属性不能同时为, true 因为键成员不能是 nullThe IsNullable and EntityKeyProperty properties cannot both be true because key members cannot be null.

EdmScalarPropertyAttribute 将数据类的标量属性链接到概念性模型中定义的实体类型或复杂类型的属性。The EdmScalarPropertyAttribute links a scalar property on a data class to a property of an entity type or complex type that is defined in the conceptual model.

此属性 (attribute) 应用于返回标量类型的属性 (property)。This attribute is applied to properties that return scalar types.

构造函数

EdmScalarPropertyAttribute()

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

属性

EntityKeyProperty

获取或设置一个值,该值指示属性是否为实体键的一部分。Gets or sets the value that indicates whether the property is part of the entity key.

IsNullable

获取或设置一个值,该值指示属性是否可以具有 null 值。Gets or sets the value that indicates whether the property can have a null value.

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