Presentation

[Fresno Bob]

I have done my first big project with .net 2.0. I like how easy it is to
build 3 tier apps with strongly typed datasets and a business logic layer.
The main thing I dislike is how to handle presentation logic:

The formview: is there any way of getting around having separate forms for
the insert and update as often they are identical.
I like databinding but dislike the formview type controls, is there anyway
to databind to textboxes from a business object with out a formview or
gridview.
What are people's opinions on the formview. Once you start nesting controls
and needing to apply presentation logic the events are a pain and you can't
access them for instance in the page load event
You end up with code all over the place to handle the inserts and updates.
I want to learn more about design patterns e.g. MVC/MVP is the formview
appropriate with these patterns

I am tempted just to use a panel and do the binding manually, it seems less
hassle. What is the best approach?

Regards, Chris.

[sloan]

If you are doing 2.0, I believe you can do DataBindings, AND handle nulls.

If you're in 1.1, you may have some obstacles.

Google this:
http://www.google.com/search?hl=en&q...new+Binding%22

DataBindings "new Binding"

One link you'll find:
http://msdn2.microsoft.com/En-US/lib...abindings.aspx

That'll get your started on "individual objects" and binding.
The issue comes with you have to bind to a value that's not populated.
That's where a "new" vs "edit" will show up, and 2.0 has better handling for
that.

Unforunately, I don't have the exact info with me....but that'll get you
started.


"Fresno Bob" <no****@nospam.comwrote in message
news:OD**************@TK2MSFTNGP04.phx.gbl...

>I have done my first big project with .net 2.0. I like how easy it is to
build 3 tier apps with strongly typed datasets and a business logic layer.
The main thing I dislike is how to handle presentation logic:

The formview: is there any way of getting around having separate forms for
the insert and update as often they are identical.
I like databinding but dislike the formview type controls, is there anyway
to databind to textboxes from a business object with out a formview or
gridview.
What are people's opinions on the formview. Once you start nesting
controls and needing to apply presentation logic the events are a pain and
you can't access them for instance in the page load event
You end up with code all over the place to handle the inserts and updates.
I want to learn more about design patterns e.g. MVC/MVP is the formview
appropriate with these patterns

I am tempted just to use a panel and do the binding manually, it seems
less hassle. What is the best approach?

Regards, Chris.

[Dave Bush]

The best way to deal with the FormView is to use an ObjectDataSource
(ODS). In the GetDataById(id) method you can pass in a -1 for "new
record" and have the GetDataById(id) method create a "new pseudo record"
for you. (ie, it won't exist in the database, but the FormView will
think it does) Then in the "Update" method, you check the ID for -1 and
do an insert if it is -1, otherwise you do an update.

That takes care of about 80% of any real problems I've had. Nesting
controls using user controls is a problem since you can't bind to them
but I honestly haven't had to do that too often and if I have it's been
for controls that are bound to a separate ODS anyhow. So, all I need to
do is pass the parent ID to the user control and let the ods in that
control do whatever work needs to be done.

-----Original Message-----
From: Fresno Bob [mailto:no****@nospam.com]
Posted At: Thursday, November 22, 2007 7:04 PM
Posted To: microsoft.public.dotnet.framework.aspnet
Conversation: Presentation
Subject: Presentation

I have done my first big project with .net 2.0. I like how easy it is to

build 3 tier apps with strongly typed datasets and a business logic
layer.
The main thing I dislike is how to handle presentation logic:

The formview: is there any way of getting around having separate forms
for
the insert and update as often they are identical.
I like databinding but dislike the formview type controls, is there
anyway
to databind to textboxes from a business object with out a formview or
gridview.
What are people's opinions on the formview. Once you start nesting
controls
and needing to apply presentation logic the events are a pain and you
can't
access them for instance in the page load event
You end up with code all over the place to handle the inserts and
updates.
I want to learn more about design patterns e.g. MVC/MVP is the formview
appropriate with these patterns

I am tempted just to use a panel and do the binding manually, it seems
less
hassle. What is the best approach?

Regards, Chris.