Asp.net Dynamic Data之三改变编辑和操作数据的现实方式

本专题介绍如何运用RouteCollection 添加或是修改Routing URL规则实现对页面的控制.

默认情况下

从Global.asax代码中我们不难看出它的规则{Table}/{action}.aspx,action=List,Detail,Edit,Insert,那么一定存在List.aspx,Detail.aspx,Edit.aspx,Insert.aspx的web page,表示不同的表的CRUD操作对应不同的页面；

// The following statement supports separate-page mode, where the List, Detail, Insert, and

// Update tasks are performed by using separate pages. To enable this mode, uncomment the following

// route definition, and comment out the route definitions in the combined-page mode section that follows.

routes.Add(new DynamicDataRoute("{table}/{action}.aspx")

{

Constraints = new RouteValueDictionary(new { action = "List|Details|Edit|Insert" }),

Model = model

});

// The following statements support combined-page mode, where the List, Detail, Insert, and

// Update tasks are performed by using the same page. To enable this mode, uncomment the

// following routes and comment out the route definition in the separate-page mode section above.

//routes.Add(new DynamicDataRoute("{table}/ListDetails.aspx")

//{

// Action = PageAction.List,

// ViewName = "ListDetails",

// Model = model

//});

//routes.Add(new DynamicDataRoute("{table}/ListDetails.aspx")

//{

// Action = PageAction.Details,

// ViewName = "ListDetails",

// Model = model

//});

页面模板如下

提供了上述定义的{action}.aspx

显示的效果

页面部分的代码

注意看NavigateUrl的属性，通过GetActionPath动态获取Url,具体的用法我们后面再说明

<asp:GridView ID="GridView1" runat="server" DataSourceID="GridDataSource"

AllowPaging="True" AllowSorting="True" CssClass="gridview">

<Columns>

<asp:TemplateField>

<ItemTemplate>

<asp:HyperLink ID="EditHyperLink" runat="server"

NavigateUrl='<%# table.GetActionPath(PageAction.Edit, GetDataItem()) %>'

Text="Edit" />&nbsp;<asp:LinkButton ID="DeleteLinkButton" runat="server" CommandName="Delete"

CausesValidation="false" Text="Delete"

OnClientClick='return confirm("Are you sure you want to delete this item?");'

/>&nbsp;<asp:HyperLink ID="DetailsHyperLink" runat="server"

NavigateUrl='<%# table.GetActionPath(PageAction.Details, GetDataItem()) %>'

Text="Details" />

</ItemTemplate>

</asp:TemplateField>

</Columns>

<PagerStyle CssClass="footer"/>

<PagerTemplate>

<asp:GridViewPager runat="server" />

</PagerTemplate>

<EmptyDataTemplate>

There are currently no items in this table.

</EmptyDataTemplate>

</asp:GridView>

改变一下编辑方式

希望修改/新增/显示（Edit,Insert,List,Detail）在一个页面里面完成，那我们需要怎么做呢；

修改一下Global.asax下的代码，注解掉上的语句，恢复下面的，URL的规则变成{table}/ListDetails.aspx,所有的操作将在同一个页面中完成；

// The following statement supports separate-page mode, where the List, Detail, Insert, and

// Update tasks are performed by using separate pages. To enable this mode, uncomment the following

// route definition, and comment out the route definitions in the combined-page mode section that follows.

//routes.Add(new DynamicDataRoute("{table}/{action}.aspx")

//{

// Constraints = new RouteValueDictionary(new { action = "List|Details|Edit|Insert" }),

// Model = model

//});

// The following statements support combined-page mode, where the List, Detail, Insert, and

// Update tasks are performed by using the same page. To enable this mode, uncomment the

// following routes and comment out the route definition in the separate-page mode section above.

routes.Add(new DynamicDataRoute("{table}/ListDetails.aspx")

{

Action = PageAction.List,

ViewName = "ListDetails",

Model = model

});

routes.Add(new DynamicDataRoute("{table}/ListDetails.aspx")

{

Action = PageAction.Details,

ViewName = "ListDetails",

Model = model

});

显示的效果

对一个表的操作都在同一个页面中完成；

页面部分的代码

这里我们看不到GetActionPath的方法了，完全按照通常的处理方式作了

<asp:GridView ID="GridView1" runat="server" DataSourceID="GridDataSource"

AutoGenerateSelectButton="True" AutoGenerateEditButton="True" AutoGenerateDeleteButton="true"

AllowPaging="True" AllowSorting="True" OnDataBound="OnGridViewDataBound"

OnRowEditing="OnGridViewRowEditing" OnSelectedIndexChanging="OnGridViewSelectedIndexChanging"

OnRowDeleted="OnGridViewRowDeleted" OnRowUpdated="OnGridViewRowUpdated"

OnRowCreated="OnGridViewRowCreated" CssClass="gridview">

<PagerStyle CssClass="footer" />

<SelectedRowStyle CssClass="selected" />

<PagerTemplate>

<asp:GridViewPager runat="server" />

</PagerTemplate>

<EmptyDataTemplate>

There are currently no items in this table.

</EmptyDataTemplate>

</asp:GridView>

更加灵活的方式

我要实现对Products表的操作分在不同的页面，而像Categories表字段少的就在一个页面里做;

修改一下Global.asax下的代码,Url规则Products/{action}.aspx，Table="Products"。

// The following statement supports separate-page mode, where the List, Detail, Insert, and

// Update tasks are performed by using separate pages. To enable this mode, uncomment the following

// route definition, and comment out the route definitions in the combined-page mode section that follows.

routes.Add(new DynamicDataRoute("Products/{action}.aspx")

{

Constraints = new RouteValueDictionary(new { action = "List|Details|Edit|Insert" }),

Table="Products",

Model = model

});

// The following statements support combined-page mode, where the List, Detail, Insert, and

// Update tasks are performed by using the same page. To enable this mode, uncomment the

// following routes and comment out the route definition in the separate-page mode section above.

routes.Add(new DynamicDataRoute("{table}/ListDetails.aspx")

{

Action = PageAction.List,

ViewName = "ListDetails",

Model = model

});

routes.Add(new DynamicDataRoute("{table}/ListDetails.aspx")

{

Action = PageAction.Details,

ViewName = "ListDetails",

Model = model

});

下期将如何改变字段的现实/编辑方式，可以是Rich_Text,Date_Edit，Number