Validator Control

5 May 2005 6:53 PM

Jim

Greetings,

A little about my situation(fairly simple)...I have an ASP.NET page
containing a number of TextBox controls with a button named "Update"
which saves all entered values back to the database. When the page is
loaded the controls contain the original values retrieved from the
database.

I have a few ValidatorControls on this page and each of these are
attached to one of the Textboxes. For the most part, the
ValidatorControls are checking to ensure a value is present. The
validation works great...but, when I click on the "Update" button
(which attempts to save all newly entered data back to the database),
I'm unable to retrieve any new values entered in the Textboxes. The
TextBox.Text properties of all textboxes on the page are equal to the
values that were initially assigned to them when the .aspx page was
loaded.

I must confess (and as you've already probably discerned by now), I'm a
Newbie...my meager understanding of the problem at this point is it's
b/c the ValidatorControls are disallowing the page to PostBack to the
server? I understand the ideal way to handle this would be to use
JavaScript.

I guess my question comes down to this...is there something simple I'm
missing and that I could change to make the TextBox.Text property
reflect the newly entered data. Or should I just scrap these
ValidatorControls and write JavaScript to do this.

Thanks for your time and any advice on this would be greatly
appreciated.

Regards,
Jim

6 May 2005 6:04 PM

Peter Blum

Hi Jim,

The validators can prevent the page from being submitted but they cannot
edit the values of the textbox. If you are getting the page to submit, next
you should see your button's Click event method fire. That's where you put
your data storage code, right? First, make sure it tests Page.IsValid is
true before saving. That is required when using validation controls.

Now why would the data be restored to its defaults? My guess is that
somewhere on the page, you have code that sets the controls to their
defaults and that code is actually being fired on post back. You have
forgotten to block it with a test of Page.IsPostBack = false.

--- Peter Blum
www.PeterBlum.com
Email: PLB***@PeterBlum.com
Creator of "Professional Validation And More" at
http://www.peterblum.com/vam/home.aspx

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"Jim" <JS***@dot.state.az.us> wrote in message
news:1115319222.533399.47790@z14g2000cwz.googlegroups.com...
> Greetings,
>
> A little about my situation(fairly simple)...I have an ASP.NET page
> containing a number of TextBox controls with a button named "Update"
> which saves all entered values back to the database. When the page is
> loaded the controls contain the original values retrieved from the
> database.
>
> I have a few ValidatorControls on this page and each of these are
> attached to one of the Textboxes. For the most part, the
> ValidatorControls are checking to ensure a value is present. The
> validation works great...but, when I click on the "Update" button
> (which attempts to save all newly entered data back to the database),
> I'm unable to retrieve any new values entered in the Textboxes. The
> TextBox.Text properties of all textboxes on the page are equal to the
> values that were initially assigned to them when the .aspx page was
> loaded.
>
> I must confess (and as you've already probably discerned by now), I'm a
> Newbie...my meager understanding of the problem at this point is it's
> b/c the ValidatorControls are disallowing the page to PostBack to the
> server? I understand the ideal way to handle this would be to use
> JavaScript.
>
> I guess my question comes down to this...is there something simple I'm
> missing and that I could change to make the TextBox.Text property
> reflect the newly entered data. Or should I just scrap these
> ValidatorControls and write JavaScript to do this.
>
> Thanks for your time and any advice on this would be greatly
> appreciated.
>
> Regards,
> Jim
>

6 May 2005 6:19 PM

James Snow

Peter,

Thanks for your time and yep, you're exactly right. I didn't have the
"IsPostBack == false" test. I actually figured this out a couple of
hours after making this post on groups.google.com. I removed it but I
guess its removal wasn't propogated to developersdex.com. Sorry 'bout
that.

Nonetheless, Thank You again for taking time to reply!!

Regards,
Jim

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