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Hi

I have a number of problems using validation controls within an UpdatePanel.
I'm using the latest framework. I have a ListView control with some text
boxes and validators and a ValidationSummary control all within the
UpdatePanel.

1. When I use an insert command the first time the validator and
ValidationSummary work as expected. When I click another button and then
try to insert again, the validators don't display. Works ok with
EnablePartialRendering="false".

2. When I delete a row in the ListView and then click another linkbutton I
get a null object error in the client script. The control object is null:

function ValidatorGetValue(id) {
var control;
control = document.getElementById(id);
if (typeof(control.value) == "string") {
return control.value;
}
return ValidatorGetValueRecursive(control);
}

What do I need to do to allow these validators to work correctly when used
inside an UpdatePanel?

Many thanks
Andrew

Hi Andrew,

>I have a number of problems using validation controls within an
UpdatePanel.
>I'm using the latest framework. I have a ListView control with some text
>boxes and validators and a ValidationSummary control all within the
>UpdatePanel.

I'm willing to assist on this issue. But first, I think I need a demo
project that can reproduce this issue. Could you send it to me? Then I can
do some tesets on my side for troubleshoting. To make it as simple as
possible, I suggest you create a new project that doesn't interact with
database. Then add code logic until the problem occurs.

My email is . Please update here after sending the
project in case I missed that email.

Regards,
Allen Chen
Microsoft Online Support

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Hi Allen

I started creating a new project yesterday but couldn't reproduce the
problem. I eventually found that the original project's web.config file had
an empty compilation segment, i.e. no

<add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
PublicKeyToken=31BF3856AD364E35"/>

entry which I believe is where the ajax friendly validation controls are.

Anyway, the project seems to work as expected now.

Thanks
Andrew

Hi Andrew,

>I started creating a new project yesterday but couldn't reproduce the
>problem. I eventually found that the original project's web.config file
had
>an empty compilation segment, i.e. no

><add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
>PublicKeyToken=31BF3856AD364E35"/>

>entry which I believe is where the ajax friendly validation controls are.

>Anyway, the project seems to work as expected now.

Glad to know you've resolved this issue on your own. Creating a new project
is always a good option to troubleshoot. We're likely to find out the
culprit by comparing two projects.

Thank you for using our Newsgroup Support Service!

Regards,
Allen Chen
Microsoft Online Community Support

=================================================
Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
.
=================================================