FormView & object

S

Steven Cheng[MSFT]

Hello Dave,

As for the ASP.NET FormView control, it is the same as normal databound
control, you can supply a custom class instance as Datasource through its
"DataSource" property and call DataBind method to perform the databinding.
The difference here is that when you manually supply the custom data object
and perform databinding, you also need to manually bandle all the
edit/update/delete events(hooking the ItemUpdating ..... events) and put
your own code logic there.

One way to still facilitate the ASP.NET 2.0 databound control/data source
control model is to define a custom class which wrapper your custom data
class that will be manipulated through FormView. Then, you can configure
the ObjectDatasource to use your that wrapper class. How do you think?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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S

Steven Cheng[MSFT]

Thanks for the reply Dave,

Yes, I forgot to mention that most of the databoundcontrol based
Controls(like GridView, DataList....) require the datasource to support the
following interfaces(see the validation code picked from reflector)

========================
protected override void ValidateDataSource(object dataSource)
{
if (((dataSource != null) && !(dataSource is IListSource)) &&
(!(dataSource is IEnumerable) && !(dataSource is IDataSource)))
{
throw new
InvalidOperationException(SR.GetString("DataBoundControl_InvalidDataSourceTy
pe"));
}
}

===============================

However, for your scenario, if you have a single object want to bind to a
databound control, you can simply wrapper it in a object Array, e.g.

==============
MyData data = new MyData();
.....

MyData[] dataarray = new MyData[1];
dataarray[0] = data;

DataControl1.DataSource = dataarray;
.............
==================

Does this workable for your case?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


This posting is provided "AS IS" with no warranties, and confers no rights.
 

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