# Class ActionDefinitionReference

OptimaJet.Workflow.Core.Model.ActionDefinitionReference

Represents a named reference to an action or to the condition logic evaluated for a [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition.

Namespace: [OptimaJet.Workflow.Core.Model](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/)

```csharp
public class ActionDefinitionReference
```

## Properties

`public string ActionName { get; set; }` 

Gets or sets the name used to resolve the referenced action or the condition logic evaluated for a [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition.

`public int Order { get; set; }` 

Gets or sets the order in which Workflow Engine executes an [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) in [ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) or [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/).

### Remarks

Workflow Engine executes those references in ascending [ActionDefinitionReference.Order](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) order. This value does not affect the order in which conditions are evaluated when the reference is assigned to [ConditionDefinition.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/).

`public string ActionParameter { get; set; }` 

Gets or sets the parameter supplied to the referenced action or to the condition logic evaluated for a [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition.

### Remarks

Workflow Engine applies parameter substitutions before invoking logic supplied by an [IWorkflowActionProvider](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime/IWorkflowActionProvider/) implementation or a matching [CodeActionDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/CodeActionDefinition/).

`public bool IsSystem { get; set; }` 

Gets or sets a value indicating whether Workflow Engine resolves the reference as a built-in system action during activity execution.

### Remarks

This value does not affect a reference assigned to [ConditionDefinition.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/).

## Methods

`public static ActionDefinitionReference Create(string actionName, string order, string parameter)` 

Creates an [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) by parsing `order` as an [int](https://learn.microsoft.com/dotnet/api/system.int32).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `actionName` | `String` | The value assigned to [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |
| `order` | `String` | The text parsed and assigned to [ActionDefinitionReference.Order](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |
| `parameter` | `String` | The value assigned to [ActionDefinitionReference.ActionParameter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/). |

### Returns

| Type | Description |
| --- | --- |
| `ActionDefinitionReference` | A new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) initialized from the supplied values. |

### Exceptions

| Type | Description |
| --- | --- |
| `ArgumentNullException` | `order` is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null). |
| `FormatException` | `order` is not in a valid integer format. |
| `OverflowException` | `order` represents a number outside the range of [int](https://learn.microsoft.com/dotnet/api/system.int32). |

`public ActionDefinitionReference Clone()` 

Creates a shallow copy of this [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/).

### Returns

| Type | Description |
| --- | --- |
| `ActionDefinitionReference` | A new [ActionDefinitionReference](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) with the same [ActionDefinitionReference.ActionName](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/), [ActionDefinitionReference.Order](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/), [ActionDefinitionReference.ActionParameter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/), and [ActionDefinitionReference.IsSystem](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActionDefinitionReference/) values as this instance. |

## Remarks

[ActivityDefinition.Implementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) and [ActivityDefinition.PreExecutionImplementation](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/) contain action references for normal execution and pre-execution simulation, respectively. [ConditionDefinition.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionDefinition/) contains the reference evaluated for a [ConditionType.Action](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ConditionType/) condition.

[Previous ActivityExecutionEventType](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Logging.Events/ActivityExecutionEventType/) [Next ActivityDefinition](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/ActivityDefinition/)