# Interface IDesignerAction

OptimaJet.Workflow.Core.Designer.IDesignerAction

Defines a handler for a custom Workflow Designer operation registered through [WorkflowRuntime.RegisterDesignerAction(string, IDesignerAction)](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime/WorkflowRuntime/).

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

```csharp
public interface IDesignerAction
```

## Type Hierarchy

-   IDesignerAction Current type
    -   Implementing types
        -   [DeleteFormVersionDesignerAction](https://api.workflowengine.io/forms-plugin/OptimaJet.Workflow.Plugins.FormsPlugin.DesignerActions/DeleteFormVersionDesignerAction/)
        -   [UploadBpmnAction](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.DesignerActions/UploadBpmnAction/)

## Methods

`Task<object> ExecuteDesignerApi(DesignerRequest designerRequest)` 

Handles the custom Workflow Designer operation described by `designerRequest`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `designerRequest` | `DesignerRequest` | The [DesignerRequest](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/DesignerRequest/) containing the operation context and input data. |

### Returns

| Type | Description |
| --- | --- |
| `Task<Object>` | A [Task<TResult>](https://learn.microsoft.com/dotnet/api/system.threading.tasks.task-1) whose result is serialized as the response to the Workflow Designer API request. |

[Previous DesignerResponse](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/DesignerResponse/) [Next NewtonsoftDefaultValueJsonConverter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Designer/NewtonsoftDefaultValueJsonConverter/)