100165762.htm

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public OrderLine()</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
private int productId;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
private float unitPrice;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
private int quantity;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
public int ProductId</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
get</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return productId;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
set</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
productId = value;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:36.85pt'><span lang=EN-US>}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
public float UnitPrice</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
get</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return unitPrice;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
set</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
unitPrice = value;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
public int Quantity</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
get</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
return quantity;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
set</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
quantity = value;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;&nbsp;&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=EN-US>}</span></p>

<h4 style='FTEL:21.45pt'><span lang=EN-US>2. OrderControl</span><span
style='font-family:黑体'>组件</span></h4>

<p class=MsoNormal><span style='font-family:宋体'>类</span><span lang=ES>OrderControl</span><span
style='font-family:宋体'>表示一个简单的业务服务组件。在这个示例中</span><span style='font-family:
宋体'>，</span><span style='font-family:宋体'>在接口</span><span lang=ES>IOrderControl</span><span
style='font-family:宋体'>中</span><span style='font-family:宋体'>只定义了一个方法</span><span
lang=ES>NewOrder()</span><span style='font-family:宋体'>。</span><span
style='font-family:宋体'>方法</span><span lang=ES>NewOrder()</span><span
style='font-family:宋体'>的实现只实例化数据服务组件</span><span lang=ES>OrderData</span><span
style='font-family:宋体'>的一个新实例，并调用方法</span><span lang=ES>Insert()</span><span
style='font-family:宋体'>把</span><span lang=ES>Order</span><span
style='font-family:宋体'>对象写入数据库。在比较复杂的情况下，这个方法可以被扩展为把一个日志项写入数据库，或者调用排队的组件，把</span><span
lang=ES>Order</span><span style='font-family:宋体'>对象发送给消息队列。</span></p>

<p class=2 style='margin-top:8.15pt;margin-right:0cm;FTEL:0cm;
margin-left:21.45pt;FTEL:.0001pt;FTEL:18.45pt'><span lang=ES>using
System;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>using
System.EnterpriseServices;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>using
System.Data;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>using
System.Data.SqlClient;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>using
System.Collections;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>&nbsp;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>namespace
Wrox.ProCSharp.EnterpriseServices</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>&nbsp;
public interface IOrderControl</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>&nbsp;&nbsp;&nbsp;
void NewOrder(Order order);</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>&nbsp;</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>[Transaction(TransactionOption.Supported)]</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>[EventTrackingEnabled(true)]</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>public
class OrderControl : ServicedComponent, IOrderControl</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>&nbsp;
[AutoComplete()]</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>&nbsp;
public void NewOrder(Order order)</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>&nbsp;
{</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
OrderData data = new OrderData();</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:23.05pt'><span lang=ES>&nbsp;&nbsp;&nbsp;&nbsp;
data.Insert(order);</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>&nbsp;
}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:27.65pt'><span lang=ES>}</span></p>

<p class=2 style='margin-left:21.45pt;FTEL:18.45pt'><span lang=ES>}</span></p>
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