# Class TBoundaryEvent OptimaJet.Workflow.BpmnPlugin.Model.TBoundaryEvent Namespace: [OptimaJet.Workflow.BpmnPlugin.Model](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/) ```csharp public class TBoundaryEvent : TCatchEvent ``` ## Type Hierarchy - [TBaseElement](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TBaseElement/) - [TFlowElement](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TFlowElement/) - [TFlowNode](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TFlowNode/) - [TEvent](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TEvent/) - [TCatchEvent](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TCatchEvent/) - TBoundaryEvent Current type ## Properties `public bool CancelActivity { get; set; }` `public XmlQualifiedName AttachedToRef { get; set; }` [Previous TBaseElementWithMixedContent](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TBaseElementWithMixedContent/) [Next TBusinessRuleTask](https://api.workflowengine.io/bpmn-plugin/OptimaJet.Workflow.BpmnPlugin.Model/TBusinessRuleTask/)