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Asp.net Dynamic Data之三改变编辑和操作数据的现实方式
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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.
\n默认情况下
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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；
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// The following statement supports separate-page mode, where the List, Detail, Insert, and
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// Update tasks are performed by using separate pages. To enable this mode, uncomment the following
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// route definition, and comment out the route definitions in the combined-page mode section that follows.
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routes.Add(new DynamicDataRoute(“{table}/{action}.aspx”)
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{
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Constraints = new RouteValueDictionary(new { action = “List|Details|Edit|Insert” }),
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Model = model
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});
\n// The following statements support combined-page mode, where the List, Detail, Insert, and
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// Update tasks are performed by using the same page. To enable this mode, uncomment the
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// following routes and comment out the route definition in the separate-page mode section above.
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//routes.Add(new DynamicDataRoute(“{table}/ListDetails.aspx”)
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//{
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// Action = PageAction.List,
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// ViewName = “ListDetails”,
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// Model = model
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//});
\n//routes.Add(new DynamicDataRoute(“{table}/ListDetails.aspx”)
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//{
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// Action = PageAction.Details,
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// ViewName = “ListDetails”,
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// Model = model
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//});
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页面模板如下
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提供了上述定义的{action}.aspx
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显示的效果
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页面部分的代码
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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
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<asp:GridView ID=”GridView1″ runat=”server” DataSourceID=”GridDataSource”
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AllowPaging=”True” AllowSorting=”True” CssClass=”gridview”>
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<Columns>
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<asp:TemplateField>
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<ItemTemplate>
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<asp:HyperLink ID=”EditHyperLink” runat=”server”
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NavigateUrl=’<%# table.GetActionPath(PageAction.Edit, GetDataItem()) %>’
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Text=”Edit” /> <asp:LinkButton ID=”DeleteLinkButton” runat=”server” CommandName=”Delete”
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CausesValidation=”false” Text=”Delete”
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OnClientClick=’return confirm(“Are you sure you want to delete this item?”);’
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/> <asp:HyperLink ID=”DetailsHyperLink” runat=”server”
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NavigateUrl=’<%# table.GetActionPath(PageAction.Details, GetDataItem()) %>’
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Text=”Details” />
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</ItemTemplate>
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</asp:TemplateField>
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</Columns>
\n<PagerStyle CssClass=”footer”/>
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<PagerTemplate>
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<asp:GridViewPager runat=”server” />
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</PagerTemplate>
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<EmptyDataTemplate>
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There are currently no items in this table.
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</EmptyDataTemplate>
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</asp:GridView>
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改变一下编辑方式
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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；
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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；
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// The following statement supports separate-page mode, where the List, Detail, Insert, and
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// Update tasks are performed by using separate pages. To enable this mode, uncomment the following
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// route definition, and comment out the route definitions in the combined-page mode section that follows.
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//routes.Add(new DynamicDataRoute(“{table}/{action}.aspx”)
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//{
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// Constraints = new RouteValueDictionary(new { action = “List|Details|Edit|Insert” }),
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// Model = model
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//});
\n// The following statements support combined-page mode, where the List, Detail, Insert, and
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// Update tasks are performed by using the same page. To enable this mode, uncomment the
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// following routes and comment out the route definition in the separate-page mode section above.
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routes.Add(new DynamicDataRoute(“{table}/ListDetails.aspx”)
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{
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Action = PageAction.List,
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ViewName = “ListDetails”,
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Model = model
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});
\nroutes.Add(new DynamicDataRoute(“{table}/ListDetails.aspx”)
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{
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Action = PageAction.Details,
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ViewName = “ListDetails”,
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Model = model
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});
\n显示的效果
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对一个表的操作都在同一个页面中完成；
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页面部分的代码
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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
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<asp:GridView ID=”GridView1″ runat=”server” DataSourceID=”GridDataSource”
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AutoGenerateSelectButton=”True” AutoGenerateEditButton=”True” AutoGenerateDeleteButton=”true”
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AllowPaging=”True” AllowSorting=”True” OnDataBound=”OnGridViewDataBound”
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OnRowEditing=”OnGridViewRowEditing” OnSelectedIndexChanging=”OnGridViewSelectedIndexChanging”
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OnRowDeleted=”OnGridViewRowDeleted” OnRowUpdated=”OnGridViewRowUpdated”
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OnRowCreated=”OnGridViewRowCreated” CssClass=”gridview”>
\n<PagerStyle CssClass=”footer” />
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<SelectedRowStyle CssClass=”selected” />
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<PagerTemplate>
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<asp:GridViewPager runat=”server” />
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</PagerTemplate>
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<EmptyDataTemplate>
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There are currently no items in this table.
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</EmptyDataTemplate>
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</asp:GridView>
\n更加灵活的方式
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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;
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修改一下Global.asax下的代码,Url规则Products/{action}.aspx，Table=”Products”。
\n// The following statement supports separate-page mode, where the List, Detail, Insert, and
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// Update tasks are performed by using separate pages. To enable this mode, uncomment the following
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// route definition, and comment out the route definitions in the combined-page mode section that follows.
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routes.Add(new DynamicDataRoute(“Products/{action}.aspx”)
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{
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Constraints = new RouteValueDictionary(new { action = “List|Details|Edit|Insert” }),
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Table=”Products”,
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Model = model
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});
\n// The following statements support combined-page mode, where the List, Detail, Insert, and
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// Update tasks are performed by using the same page. To enable this mode, uncomment the
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// following routes and comment out the route definition in the separate-page mode section above.
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routes.Add(new DynamicDataRoute(“{table}/ListDetails.aspx”)
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{
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Action = PageAction.List,
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ViewName = “ListDetails”,
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Model = model
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});
\nroutes.Add(new DynamicDataRoute(“{table}/ListDetails.aspx”)
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{
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Action = PageAction.Details,
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ViewName = “ListDetails”,
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Model = model
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});
下期将如何改变字段的现实/编辑方式，可以是Rich_Text,Date_Edit，Number \n