Databases Reference
In-Depth Information
FIGURE 1.13
GridView page with dynamic field columns.
Similar to
DynamicControl
,
DynamicField
uses column metadata to automatically select
and load an appropriate field template. In other words, pages built with
FormView
,
DetailsView
, and
GridView
controls can reuse the same set of field templates.
Like the
DynamicEntity
control, which allows you to build a data entry form that includes
all columns of a particular table, Dynamic Data offers a similar capability for grid
columns. In Listing 1.14, the explicit definitions of fields for ProductName and
UnitsInStock have been removed. Instead, the
AutoGenerateColumns
property of the
GridView
control is set to true.
LISTING 1.14
DefaultAutoFieldGenerator Sample (Markup)
<%@ Page Language=”C#”
MasterPageFile=”~/Site.master” CodeBehind=”SamplePage.aspx.cs”
Inherits=”WebApplication.Samples.Ch01.FieldGenerator.SamplePage” %>
<asp:Content ContentPlaceHolderID=”main” runat=”server”>
<asp:ValidationSummary ID=”ValidationSummary1” runat=”server”/>
<asp:GridView ID=”gridView” runat=”server” DataSourceID=”dataSource”
DataKeyNames=”ProductID” AutoGenerateEditButton=”true”
AllowPaging=”true”
AutoGenerateColumns=”true”/
>
<asp:EntityDataSource ID=”dataSource” runat=”server”
ConnectionString=”name=NorthwindEntities” EnableUpdate=”true”
DefaultContainerName=”NorthwindEntities” EntitySetName=”Products” />
</asp:Content>
