[dba-VB] VB.Net XML - store form defaults

The specific "how" is use the databindings properties of the form.
Typed Datasets are the easiest to work with because even in design time,
they know what the properties of their source is--fields, data types,
etc.  We normally create a class for each typed dataset, give it
whatever business rules we want to enforce at the data level, and drag
the class form the toolbox onto the form or user control.  That creates
the binding to the form and you can then control the binding to the
controls in design view or through code. 

Charlotte Foust

-----Original Message-----
From: dba-vb-bounces at databaseadvisors.com
[mailto:dba-vb-bounces at databaseadvisors.com] On Behalf Of jwcolby
Sent: Wednesday, July 18, 2007 6:58 PM
To: dba-vb at databaseadvisors.com
Subject: Re: [dba-VB] VB.Net XML - store form defaults

Shamil,

Funny you should mention that.  I was working on just such a class
earlier this afternoon - from a book called Beginning Visual Basic .NET
from Wrox.
That book does not mention binding the form to the class though.  It
actually reads / writes the values out of the controls.  I like the
"binding" idea.  Now all I have to do is figure out how to do that. 


John W. Colby
Colby Consulting
www.ColbyConsulting.com
-----Original Message-----
From: dba-vb-bounces at databaseadvisors.com
[mailto:dba-vb-bounces at databaseadvisors.com] On Behalf Of Shamil
Salakhetdinov
Sent: Wednesday, July 18, 2007 9:35 PM
To: dba-vb at databaseadvisors.com
Subject: Re: [dba-VB] VB.Net XML - store form defaults

Hello John,

It's rather easy on .NET (there could be dozen ways to do that) -
simplest IMO and the most appropriate for you because you are a bounder
and you like custom classes :) :

- create custom class preferably with public setters and getters for the
properties values you use;
- bind your form to this custom class;
- run you application and edit bound to your custom class form fields'
values;
- use System.Xml.Serialization.XmlSerializer and TextWriter/StreamWriter
and TextReader/StreamReader to save/restore (serialize to/desterilize
from) defaults to/from text(xml) file...
- next time you start your app your class static method will read
serialized XML, will desterilize it into class instance and will bind
your form to the properties of this class instance...


That's it. Should be less than 10 lines of code to serialize/desterilize
defaults to/from xml file...

--
Shamil

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