K3/Cloud 用插件打开一张已存在的单据

BillShowParameter billpara = new BillShowParameter();
billpara.FormId = "SAL_SaleOrder";//单据唯一标识
//修改状态打开
billpara.Status = OperationStatus.EDIT;
//打开已有的单据的内码
billpara.PKey = "100003";               
this.View.ShowForm(billpara);