有时候需要对单据类型字段的值进行控制，比如直接给单据类型字段设置指定的值，或者控制单据类型下拉列表的可选数据范围，此需求需要编写单据插件，对字段枚举集合进行一定的处理，如：

public override void BeforeBindData(EventArgs e)

{

     判断执行条件，比如下推和选单不执行

     if ((this.View.OpenParameter.Status == OperationStatus.ADDNEW                && this.View.OpenParameter.CreateFrom == CreateFrom.Push) || this.View.OpenParameter.CreateFrom == CreateFrom.Draw)            

    {

     BillTypeField billTypeField = this.View.Model.BusinessInfo.GetBillTypeField(); 

     ComboFieldEditor editor = this.View.GetFieldEditor<ComboFieldEditor>(billTypeField.Key, 0); 

     List<EnumItem> items = billTypeField.BuildEnumList(); 

     List<EnumItem> listItems = new List<EnumItem>(); 

     foreach(var item in items) 

     {

         listItems.Add(new EnumItem(new DynamicObject(EnumItem.EnumItemType))   {     EnumId = item.EnumId,     Value = item.Value,     Caption = item.Caption   }); 

     } 

     editor.SetComboItems(listItems);

     this.Model.SetValue(billTypeField.Key, "单据类型内码", 0);

     } 

     .............

}

DynamicFormOpenParameter openPara = this.View.OpenParameter;           

 if (openPara == null && this.View.ParentFormView != null                && this.View.ParentFormView is IListView)        {                

     openPara = this.View.ParentFormView.OpenParameter;           

 }

 if(openPara != null)

{

    object objValue = openPara.GetCustomParameter("自定义参数名");

}

取单据界面或父项单据列表的窗口打开参数