Validators not preventing postbacks

[AD]

Hi,

I have 2 different web pages, both using RequiredFieldVa lidator's, on
the one page Postbacks are prevented when required fields are blank,
on the other page the validators display the error messages after the
postback has returned, but neither the client side, nor the server
side processing is suppressed (my incomplete data is written to my
table)

Any idea what could be wrong?

[=?Utf-8?B?TWlsb3N6IFNrYWxlY2tpIFtNQ0FEXQ==?=]

RE: Validators not preventing postbacks

Hi there,

First if you want to prevent the post from the client browser set
EnableClientScr ipt to true. Second, we can't rely on client script validation
as it's very easy to prepare a page that simply skips it. Anyway, the problem
is you don't check IsValid property before executing database insertion code.
Valdators do not prevent page execution automatically (apart from client
side), therefore before you perfom any action, you need to check if page
passed validation (in other words, if all the validators are valid):

protected void MyInsertButtonC lick(object sender, EventArgs e)
{
if (this.IsValid)
{
// insert data to database
}
}

Hope this helps
--
Milosz


"AD" wrote:

Hi,
>
I have 2 different web pages, both using RequiredFieldVa lidator's, on
the one page Postbacks are prevented when required fields are blank,
on the other page the validators display the error messages after the
postback has returned, but neither the client side, nor the server
side processing is suppressed (my incomplete data is written to my
table)
>
Any idea what could be wrong?
>
>

[AD]

Re: Validators not preventing postbacks

Hi Milosz,

Thanks for the response.

Both EnableClientScr ipt and Enabled is true on the Validator control,
on both pages, on the one page the postback is prevented, on the other
it is not, anything else I can check?

[Toty Santana]

Re: Validators not preventing postbacks



check that the db update control has the "CausesValidati on" property set to True.

Check the validation group, the db update button(or what ever control you are using) and validation should have the same validation group or they both should have no validation if required.

if non of the bove worked use Page.Validate() in the click event for the db update button, but u don't need to do that if "CausesValidati on" = True.
"AD" <adriaandavel@y ahoo.co.ukwrote in message news:1176887946 .638462.133160@ n59g2000hsh.goo glegroups.com.. .
Hi Milosz,

Thanks for the response.

Both EnableClientScr ipt and Enabled is true on the Validator control,
on both pages, on the one page the postback is prevented, on the other
it is not, anything else I can check?

[=?Utf-8?B?TWlsb3N6IFNrYWxlY2tpIFtNQ0FEXQ==?=]

Re: Validators not preventing postbacks

Make sure you check the button has got CausesValidatio n set to true, and the
code tests for IsValid in button's event handler:

if (Page.IsValid)
{
// collect values and insert into a databse
}

hope this helps
--
Milosz


"AD" wrote:

Hi Milosz,
>
Thanks for the response.
>
Both EnableClientScr ipt and Enabled is true on the Validator control,
on both pages, on the one page the postback is prevented, on the other
it is not, anything else I can check?
>
>