Blank page after selection

9 Jan 2006 9:30 AM

Chris Zopers

Hello,

I've developed an ASP.NET page with a dropdownlist and several
textboxes. When the user selects an item from the dropdownlist, some
data is retrieved from a database and displayed in the textboxes.

The items that are in the dropdownlist are also retrieved from the
database in the Page_Load event (only the first time, not in postbacks).

Everything works fine, except when the user selects an item from the
dropdownlist and immediately clicks the dropdownlist again (before the
data is fully retrieved from the database). In that case, the whole page
turns blank. All controls are gone, nothing is shown except for a blank
white page.

Does anyone know what causes this problem and how to solve this?

Greetings,
Chris

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9 Jan 2006 12:36 PM

Christopher Reed

It sounds like you have a AutoPostBack set to true for your dropdownlist.
You might consider setting it to false and use an additional button to
submit the form. This way, if your user selects something in the
dropdownlist before the page has completely finished, it won't postback on
itself too soon.

Hope this helps!

--
Christopher A. Reed
"The oxen are slow, but the earth is patient."

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"Chris Zopers" <test123tes***@12move.nl> wrote in message
news:%23B4sI9PFGHA.3488@TK2MSFTNGP10.phx.gbl...
> Hello,
>
> I've developed an ASP.NET page with a dropdownlist and several
> textboxes. When the user selects an item from the dropdownlist, some
> data is retrieved from a database and displayed in the textboxes.
>
> The items that are in the dropdownlist are also retrieved from the
> database in the Page_Load event (only the first time, not in postbacks).
>
> Everything works fine, except when the user selects an item from the
> dropdownlist and immediately clicks the dropdownlist again (before the
> data is fully retrieved from the database). In that case, the whole page
> turns blank. All controls are gone, nothing is shown except for a blank
> white page.
>
> Does anyone know what causes this problem and how to solve this?
>
> Greetings,
> Chris
>
> *** Sent via Developersdex http://www.developersdex.com ***

9 Jan 2006 1:36 PM

Chris Zopers

Hello,

I use an autopostback on the dropdownlist indeed. I'll try your
solution, that should work!

Thanks en greetings,
Chris.

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