RuleInvokeAttribute 类

定义

指示由条件调用方法。Indicates that a method is invoked by a condition. 此类不能被继承。This class cannot be inherited.

public ref class RuleInvokeAttribute sealed : System::Workflow::Activities::Rules::RuleAttribute
[System.AttributeUsage(System.AttributeTargets.Method | System.AttributeTargets.Property, AllowMultiple=true)]
public sealed class RuleInvokeAttribute : System.Workflow.Activities.Rules.RuleAttribute
[<System.AttributeUsage(System.AttributeTargets.Method | System.AttributeTargets.Property, AllowMultiple=true)>]
type RuleInvokeAttribute = class
    inherit RuleAttribute
Public NotInheritable Class RuleInvokeAttribute
Inherits RuleAttribute
继承
RuleInvokeAttribute
属性

示例

下面的代码示例演示 RuleInvokeAttribute 的正确用法。The following code example demonstrates proper usage of the RuleInvokeAttribute.

[RuleInvokeAttribute("UpdateAttributeValue")]  

bool DoSomething()  
{  
    return attributevalue();  
}  

注解

此属性用于支持正向链接模型,该模型将导致基于状态更改重新计算规则。This attribute is used to support a forward chaining model that will cause the reevaluation of rules based on state change. RuleReadAttributeRuleInvokeAttributeRuleWriteAttribute 类分别表示用于读取条件、写入操作和调用方法的属性。The RuleReadAttribute, RuleInvokeAttribute, and RuleWriteAttribute classes each indicate the properties used to read a condition, write an action, and invoke a method. 这些属性使工作流仅重新计算将更改最终输出的规则。These attributes enable the workflow to only reevaluate rules that will change the final output.

构造函数

RuleInvokeAttribute(String)

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

属性

MethodInvoked

获取由条件调用的方法。Gets the method invoked by the condition.

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