学步园

看了微软的UIP例子
有点收获
1 先写 config配置文件

<navigationGraph 
                iViewManager="WebFormViewManager"
                name="Shopping" 
                state="State" 
                statePersist="SqlServerPersistState"
                startView="browsecatalog"
                cacheExpirationMode="Absolute"
                cacheExpirationInterval="12:00:00">
                
            <node view='cart'>
                <navigateTo navigateValue="resume" view='browsecatalog' />
                <navigateTo navigateValue="checkout" view='checkout' />
                <navigateTo navigateValue="fail" view='error' />
                <navigateTo navigateValue="stop" view='logon'/>
            </node>
            <node view='browsecatalog'>
                <navigateTo navigateValue="addItem" view="cart"/>
                <navigateTo navigateValue="fail" view='error' />
            </node>
            <node view='error'>
                <navigateTo navigateValue="resume" view='cart' />
            </node>
            <node view="checkout">
                <navigateTo navigateValue="congratulations" view="congratulations" />
                <navigateTo navigateValue="failCheckout" view="checkout" />
            </node>
            <node view='congratulations'>
                <navigateTo navigateValue="resume" view='cart' />
                <navigateTo navigateValue="stop" view='cart' />
            </node>
        </navigationGraph>

这里就可以看出程序的导航路径了
2 真正控制导航的地方
比如web 页面有个按钮 点击的时候 对应代码如下

StoreControllerNavGraph.AddToCart(productID, 1);

就是 this.controler.addtocart
具体this.controler 就是上面 配置程序中给出的这个页面的控制器了
  <view name="cart" type="cart.aspx" controller="StoreControllerNavGraph" />
3 看看内部代码

base.AddToCart(productId,quantity);//执行具体的数据库也较商业逻辑操作-没什么别的
    this.State.NavigateValue = "addItem";
                this.State.Save(); //Stores the state using the persistence provider related to this state.
            Navigate();//执行导航了