Re: Is Dirty

Somewhat related, when using Data Binding, if you touch a field (say a
textbox that is data bound) the DataRow gets flagged "Modified".  If you
'untouch' the DataRow is still flagged as Modified. We wrote a
DataReallyIsDirty method that compares original to current and if they are
the same the commit is cancelled, even though the DataRow is marked as
modified .



-----Original Message-----
From: Discussion forum for developers using Windows Forms to build apps
and controls [mailto:[email protected]]On Behalf Of
Brady Kelly
Sent: Thursday, May 17, 2007 11:02 AM
To: [email protected]
Subject: Re: [DOTNET-WINFORMS] Is Dirty


My argument as well, against using the Quick-draw method described by Phil.
My first response as a user is, "But I haven't changed anything!" and I'm
fortunate enough to understand why it happens.  Imagine the telephonist
users I expect this app targeted at.  Ok, maybe they won't even be bothered
about it.


> -----Original Message-----
> From: Discussion forum for developers using Windows Forms to build apps
> and controls [mailto:[email protected]] On Behalf Of
> Peter Osucha
> Sent: 17 May 2007 16:50 PM
> To: [email protected]
> Subject: Re: [DOTNET-WINFORMS] Is Dirty
>
> That isn't quite as efficient though (I don't think).  If a user changes
> something and then changes it back, the 'IsDirty' would still be true
> even though technically, nothing has changed.  I haven't done the
> serializing thing to check for IsDirty but it seems solid.
>
> -----Original Message-----
> From: Discussion forum for developers using Windows Forms to build apps
> and controls [mailto:[email protected]] On Behalf Of
> Phil Sayers
> Sent: Thursday, May 17, 2007 10:29 AM
> To: [email protected]
> Subject: Re: [DOTNET-WINFORMS] Is Dirty
>
> inside your entity, or even in a common base class...
>
> add a property, and a backing field
>
> Public ReadOnly prperty IsDirty
> get
> return _IsDirty
> end get
>
> in all your public property Set blocks add "_isDirty = True"
>
>
>
>
> -----Original Message-----
> From: Discussion forum for developers using Windows Forms to build apps
> and controls [mailto:[email protected]]On Behalf Of
> Brady Kelly
> Sent: Thursday, May 17, 2007 10:25 AM
> To: [email protected]
> Subject: [DOTNET-WINFORMS] Is Dirty
>
>
> I'm doing a quick and dirty prototype app, with one simple detail edit
> screen, so I've used simple own code to transfer values between controls
> and
> data entity, deferring properly implementing data binding at a later
> stage[1].  Now I want to know if the edited entity is 'dirty'.  My first
> reaction is to serialise it on starting my edit, and then when closing
> the
> form, and compare the two.  How do the experts here feel about this?