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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..

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  • Have you tried removing class="submit-bt01" and double check again ? Commented May 5, 2012 at 13:07
  • i have already done it..but is of no use.. Commented May 5, 2012 at 13:09
  • 1
    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. Commented May 5, 2012 at 13:12
  • i havn't understood it @Deepu can u please explain it Commented May 5, 2012 at 13:14
  • 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? Commented May 5, 2012 at 13:14

2 Answers 2

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

Scenario A:

  1. Load the page by URL
  2. Click submit, a refreshed page comes back.
  3. 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:

  1. Load the page by URL
  2. 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;

  1. Are you doing any javascript in the page that would cause it to behave differently on each page load?
  2. Are you getting to the page by way of a post-back from a different page?
  3. 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.

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3 Comments

my situation is accurately as in the Scenario A: thanks for Explaining things for me.
at my present situation i cant do Response.Redirect. can any one tell me any other ideas
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
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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.

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2 Comments

@D Stanley I think you are right(it is a POST ) .can you suggest any solution
It depends on how you want it to behave. Redirecting to a new page is simplest.

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