button click event automatically fires

Question

My situation is like this i have a asp button inside my user control

  <asp:Button ID="btnSubmit"
        Text="Send Notification" class="submit-btn01"   onclick="btnSubmit_Click1" runat="server" />

in my browser when I refresh my page, button click event automatically happens.i cant figure out what is wrong with this..

Have you tried removing `class="submit-bt01"` and double check again ? — Shankar Narayana Damodaran, May 05 '12 at 13:07
Can you check the view source of this button, how its rendering.Also ensure you have not firing this button event handler from jQuery or page_load method. — Deepu Madhusoodanan, May 05 '12 at 13:12
Is it a submit button? Maybe, after you press refresh button your browser performs a page submitting. Open a new tab in the browser and navigate to your site, does click event fire again? — Taras Feschuk, May 05 '12 at 13:14
for my surprise this thing does not happen the first time i refresh my page.that is if i pressed submit button once and after that when i refresh my page it happens — None, May 05 '12 at 13:21

score 3 · Accepted Answer · edited May 23 '17 at 10:34

Your question is a little vague. It sounds like you have one of the following scenarios:

Scenario A:

Load the page by URL
Click submit, a refreshed page comes back.
Hit F5 on the page and you get a message asking if you want to resubmit the form, and the Submit button action happens again

Scenario B:

Load the page by URL
Hit F5 on the page and and the Submit button action happens

For Scenario A;

if you want to avoid the re-postback, you should do a Response.Redirect() to the current page in the btnSubmit_Click1 event handler, as mentioned in more detail here: asp.net prevent form submission twice

For Scenario B;

Are you doing any javascript in the page that would cause it to behave differently on each page load?
Are you getting to the page by way of a post-back from a different page?
Are you doing anything odd/fancy in the page life-cycle on the code-behind side? E.g. CreateChildControls?

...if it's scenario B, and the answer to these are no, then I'm very curious to see what the final cause of the problem is as I can't imagine why a page would behave differently between a load and a reload.

my situation is accurately as in the Scenario A: thanks for Explaining things for me. — None, May 05 '12 at 13:31
at my present situation i cant do Response.Redirect. can any one tell me any other ideas — None, May 05 '12 at 13:36
Can't you do this in your page:? protected override void button_onclick(object sender, EventArgs e) { SendMail(); Response.Redirect(Request.Url.AbsoluteUri); } ...note that the important thing is that you are not redirecting to a new page, you are redirecting to the page you are already on, but the redirect will do a GET and not a POST — C.List, May 05 '12 at 15:44

score 1 · Answer 2 · answered May 05 '12 at 13:35

1

Refresh is likely repeating the last action that was performed if it was a POST.
Since the last action was to submit the form using your button that is getting replayed.

answered May 05 '12 at 13:35

D Stanley

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@D Stanley I think you are right(it is a POST ) .can you suggest any solution – None May 05 '12 at 13:37
It depends on _how_ you want it to behave. Redirecting to a new page is simplest. – D Stanley May 05 '12 at 13:52

button click event automatically fires

2 Answers2