@[TOC](目录)
### 背景
单据上一般单据头会有一个附件管理按钮，表体也会有一个附件管理按钮，这两个按钮点击后弹出的窗口都是同一个业务对象。当希望表体的“附件”只允许查看，不允许新增修改删除。单据头的“附件”又不想这样限制时，可以通过如下脚本实现。以采购订单为例
### python案例
#### 采购订单(PUR_PurchaseOrder)表单插件
```python
import clr
clr.AddReference('mscorlib')
from System import *
def BarItemClick(e):
if e.BarItemKey == "tbAccessory":#表头附件按钮标识
this.View.OpenParameter.SetCustomParameter("IsShowBarItem", "Head")
def EntryBarItemClick(e):
if e.BarItemKey == "tbAccessoryCount":#表体附件按钮标识
this.View.OpenParameter.SetCustomParameter("IsShowBarItem", "Entry")
```
#### 附件明细(BOS_Attachment)列表插件
```python
import clr
clr.AddReference('mscorlib')
from System import *
def AfterBindData(e):
if this.View.ParentFormView.OpenParameter.GetCustomParameter("IsShowBarItem") == "Entry":
this.View.GetBarItem("", "tbNew").Visible = False
this.View.GetBarItem("", "tbbtnEdit").Visible = False
this.View.GetBarItem("", "tbbtnDel").Visible = False
else:
this.View.GetBarItem("", "tbNew").Visible = True
this.View.GetBarItem("", "tbbtnEdit").Visible = True
this.View.GetBarItem("", "tbbtnDel").Visible = True
```
### 实现效果
::: hljs-center
(表头附件窗口)
:::
::: hljs-center
(表体附件窗口)
:::
**其他更多文章入口：**[https://wenku.my7c.com/link/s/lbRPP](https://wenku.my7c.com/link/s/lbRPP)
