How to clear form after postback

[Dave]

Hi,

I have an asp.net page with a form. When the submit button is clicked it
sends an email.

When the page reloads the form fields are still filled with the info that
just got submitted.

I tried
<%@ Page EnableViewState="false" %>
but it doesn't clear the form.

I also tried EnableViewState="false" in each form element and that doesn't
work either.

How can I disable the postback information?

Thanks!!!

[Hans Kesting]

"Dave" <st****@games.com> wrote in message news:uj****************@TK2MSFTNGP12.phx.gbl...

Hi,

I have an asp.net page with a form. When the submit button is clicked it
sends an email.

When the page reloads the form fields are still filled with the info that
just got submitted.

I tried
<%@ Page EnableViewState="false" %>
but it doesn't clear the form.

I also tried EnableViewState="false" in each form element and that doesn't
work either.

How can I disable the postback information?

Thanks!!!

This is standard Postback behavior that is very useful when you have server-side validators.

You have two options:
1) when the email is successfully sent, clear all fields
2) do a redirect (to the same url), after sending.

The disadvantage of 1 is that when the user refreshes the page,
the email might get sent again (this empty page was the result of a
form submission, refresh submits the original form again ...).
You don't have that problem with 2.

Hans Kesting

[One Handed Man \( OHM - Terry Burns \)]

One question. If you use method 2, will this not start a new session each
time. ?, if so this could eat up a lot of memory if someone is sitting there
sending loads of emails

--

OHM ( Terry Burns )
. . . One-Handed-Man . . .

Time flies when you don't know what you're doing

"Hans Kesting" <ne***********@spamgourmet.com> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

"Dave" <st****@games.com> wrote in message news:uj****************@TK2MSFTNGP12.phx.gbl...

Hi,

I have an asp.net page with a form. When the submit button is clicked it sends an email.

When the page reloads the form fields are still filled with the info that just got submitted.

I tried
<%@ Page EnableViewState="false" %>
but it doesn't clear the form.

I also tried EnableViewState="false" in each form element and that doesn't work either.

How can I disable the postback information?

Thanks!!!

This is standard Postback behavior that is very useful when you have

server-side validators.
You have two options:
1) when the email is successfully sent, clear all fields
2) do a redirect (to the same url), after sending.

The disadvantage of 1 is that when the user refreshes the page,
the email might get sent again (this empty page was the result of a
form submission, refresh submits the original form again ...).
You don't have that problem with 2.

Hans Kesting

[Hans Kesting]

"One Handed Man ( OHM - Terry Burns )" <news.microsoft.com> wrote in message news:Oo*************@TK2MSFTNGP11.phx.gbl...

One question. If you use method 2, will this not start a new session each
time. ?, if so this could eat up a lot of memory if someone is sitting there
sending loads of emails

--

No, a redirect leaves you in the same session.

Some reasons to get a new session:
*) When you first close all browser windows (so that the session-cookie
gets destroyed) and then open a new one.
*) When you use a browser of a different brand (or maybe a new instance
of your current browser, "new window" usually is NOT enough)
*) When you don't access the site for (default) 20 minutes.
*) When the server code specifies that the session should be destroyed
(maybe after a "logout")

Hans Kesting

[One Handed Man \( OHM - Terry Burns \)]

Thanks

--

OHM ( Terry Burns )
. . . One-Handed-Man . . .

Time flies when you don't know what you're doing

"Hans Kesting" <ne***********@spamgourmet.com> wrote in message
news:uE*************@tk2msftngp13.phx.gbl...

"One Handed Man ( OHM - Terry Burns )" <news.microsoft.com> wrote in

message news:Oo*************@TK2MSFTNGP11.phx.gbl...

One question. If you use method 2, will this not start a new session each time. ?, if so this could eat up a lot of memory if someone is sitting there sending loads of emails

--

No, a redirect leaves you in the same session.

Some reasons to get a new session:
*) When you first close all browser windows (so that the session-cookie
gets destroyed) and then open a new one.
*) When you use a browser of a different brand (or maybe a new instance
of your current browser, "new window" usually is NOT enough)
*) When you don't access the site for (default) 20 minutes.
*) When the server code specifies that the session should be destroyed
(maybe after a "logout")

Hans Kesting

[Dave]

Thanks Hans,

That seems to work.

I put redirect after the email send line.

The first time I submitted the page it didn't load the page though. The
page came up with a link. Click the link and it loads the page.

Subsequent submits came up correctly.

Is that right?

BTW, this is off topic, but how can I submit a page using an image and not a
button in asp.net?

Thanks!!!
Dave