RuleInvokeAttribute Class

Reference

Definition

Namespace:: System.Workflow.Activities.Rules

Assembly:: System.Workflow.Activities.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Indicates that a method is invoked by a condition. 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

Inheritance: Object

Attribute

RuleAttribute
RuleInvokeAttribute

Attributes: AttributeUsageAttribute

Examples

The following code example demonstrates proper usage of the RuleInvokeAttribute.

[RuleInvokeAttribute("UpdateAttributeValue")]  

bool DoSomething()  
{  
    return attributevalue();  
}

Remarks

This attribute is used to support a forward chaining model that will cause the reevaluation of rules based on state change. The RuleReadAttribute, RuleInvokeAttribute, and RuleWriteAttribute classes each indicate the properties used to read a condition, write an action, and invoke a method. These attributes enable the workflow to only reevaluate rules that will change the final output.

Constructors

RuleInvokeAttribute(String)

Initializes a new instance of the RuleInvokeAttribute class.

Properties

MethodInvoked	Gets the method invoked by the condition.
TypeId	When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute)

Methods

Equals(Object)	Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute)
GetHashCode()	Returns the hash code for this instance. (Inherited from Attribute)
GetType()	Gets the Type of the current instance. (Inherited from Object)
IsDefaultAttribute()	When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute)
Match(Object)	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Explicit Interface Implementations

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)	Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)	Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute)
_Attribute.GetTypeInfoCount(UInt32)	Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)	Provides access to properties and methods exposed by an object. (Inherited from Attribute)

Applies to

แชร์ผ่าน