DbProviderSpecificTypePropertyAttribute 类

定义

标识在设置提供程序特定的类型时,使用强类型参数类中的哪个提供程序特定的属性。Identifies which provider-specific property in the strongly typed parameter classes is to be used when setting a provider-specific type.

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

注解

DbProviderSpecificTypePropertyAttribute提供程序编写器使用来指定特定于提供程序的类型参数属性,该属性不是继承自 DbParameter 基类的。The DbProviderSpecificTypePropertyAttribute is used by a provider writer to designate a provider-specific type parameter property which is not inherited from the DbParameter base class. SqlDbType 属性 SqlParameter 是中找不到的特定于提供程序的类型属性的示例 DbParameterThe SqlDbType property of a SqlParameter is an example of a provider-specific type property not found in DbParameter.

提供程序编写器可应用于 DbProviderSpecificTypePropertyAttribute(true) 指示特定于提供程序的数据类型参数属性。A provider writer can apply DbProviderSpecificTypePropertyAttribute(true) to indicate a provider-specific data type parameter property. 这允许使用反射来发现它,这使得代码生成工具(如 Visual Studio 中使用的工具)能够生成适用于特定提供程序的代码。This allows for its discovery using reflection, which enables code generation tools, such as those used in Visual Studio, to generate code geared to a specific provider. IsProviderSpecificTypeProperty true 如果已设置了属性,则属性返回; 否则返回 falseThe IsProviderSpecificTypeProperty property returns true if the property has been set, otherwise false.

构造函数

DbProviderSpecificTypePropertyAttribute(Boolean)

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

属性

IsProviderSpecificTypeProperty

指示特性化属性是否为特定于提供程序的类型。Indicates whether the attributed property is a provider-specific type.

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

另请参阅