/// <summary>
 /// 通过WorkflowInstanceID获取工时记录
 /// </summary>
 /// <param name="WorkflowInstanceID">流程审批id</param>
 /// <returns></returns>
 public List <Timesheet> GetTimesheetsByWorkflowInstanceID(string workflowInstanceID)
 {
     return(_repository.GetAllList().Where(ts => ts.WorkflowInstanceID == workflowInstanceID).ToList());
 }