Page Templates - ASP.NET Dynamic Data - page 162

In field templates, the DynamicValidator controls are associated with MetaColumn objects
describing specific entity properties. However, the DynamicValidator control used by the
Edit page template is not associated with any particular column and specifies the FormView
as its ControlToValidate . When configured this way, the DynamicValidator control
catches unhandled validation exceptions thrown by the EntityDataSource associated with
the FormView . Chapter 8, “Implementing Entity Validation,” provides detailed discussion
of this topic.
Listing 6.4 shows the code-behind file of the Edit page template.
LISTING 6.4 Edit Page Template (Code-Behind)
using System;
using System.Web.DynamicData;
using System.Web.UI.WebControls;
namespace WebApplication.DynamicData.PageTemplates
{
public partial class Edit : System.Web.UI.Page
{
protected MetaTable table;
protected void Page_Init(object sender, EventArgs e)
{
this.table = DynamicDataRouteHandler.GetRequestMetaTable(Context);
this.Title = table.DisplayName;
this.dataSource.EntityTypeFilter = this.table.EntityType.Name;
this.dataSource.Include = this.table.ForeignKeyColumnsNames;
}
protected void FormView_ItemCommand(object sender, FormViewCommandEventArgs e)
{
if (e.CommandName == DataControlCommands.CancelCommandName)
this.Response.Redirect(this.table.ListActionPath);
}
protected void FormView_ItemUpdated(object sender, FormViewUpdatedEventArgs e)
{
if (e.Exception == null || e.ExceptionHandled)
this.Response.Redirect(this.table.ListActionPath);
}
}
}
Initialization code in the Page_Init event handler is identical to that in the Details page
template. The FormView_ItemUpdated event handler redirects the user to the List page after