Synchronous PostBack

Posted on 2015-02-01
Last Modified: 2015-02-02
Does a synchronous postback  cause a web page to freeze out the user from interacting with the webpage?

Thus you can not click on the submit button until the response comes back from clicking the button the first time.
Is this true?
Question by:metro156
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LVL 83

Expert Comment

by:Dave Baldwin
ID: 40583245
Probably but you haven't mentioned what language or method you are using.  However... it may not stop the button from being clicked, it just delays the second response.

Author Comment

ID: 40583264
I am using C#.   I am  posting back (submitting).

Author Comment

ID: 40583267
I guess what I am asking - do I have to disable the button so they user won't double submit?
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LVL 83

Expert Comment

by:Dave Baldwin
ID: 40583286
Yes, you may have to.  On a normal HTML form, the 'submit' button is still active as long at the page is up.  That's why it is often recommended to disable it the first time it is clicked.  Most of the time it's not a problem but that's what you do when it is.

Author Comment

ID: 40583478
This is on a aspx page. Why would you say " Most of the time it's not a problem " ?
LVL 83

Accepted Solution

Dave Baldwin earned 500 total points
ID: 40583485
Because 'most of the time' there is no time to make a second click.  The submit is effectively instantaneous.  It's only when the page responds slowly and the user has time to click a second time that it becomes a problem.  I don't think I have any form pages (out of hundreds) that need to disable the 'submit' button.

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