__dopostback not working

[Premalm]

Hi Guys,

In my page whenever the user leaves the page I want to save all the data. So onbeforeunload event I call __dopostback('butUpdate',''). I have written a javascript function
function __dopostback(eventTarget,eventArgument) {
var theform = document.Form1;
theform.__EVENTTARGET.value = eventTarget;
theform.__EVENTARGUMENT.value = eventArgument;
theform.submit();
}

This some how is not working. I want to autosave when the user clicks on a different page.

Any Ideas ?

Thanks
Premal

 

[ca8msm]

In my page whenever the user leaves the page I want to save all the data

Do you realise that you will never be 100% successful in this?


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[Premalm]

Yes. I do. We are going to tell the users.

 

[ca8msm]

OK, have you stepped through the code to see if the function is being called successfully or whether it just isn't firing?


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[Premalm]

Now I have fixed this problem but I have a new problem.

What happening is, its saving if they click the back button or close the browser or click on a different link. The new problem is after running the autosave code the focus remains on the same page.

i.e So the back button is not working now or if they click on a different link it updates automatically but doesn't go to that page. It stays on the page which is calling the dopostback function.

Any Ideas ?

Thanks
Premal

 

[BoulderBum]

As a detail, I'd look into the GetPostBackEventReference()rather than calling __DoPostBack() directly, but by Posting back to the server, it seems you're interrupting the functionality that would have been executed afterwards.

You may be able to get around it with a server-side redirect or other processing in the case of your own controls, but for the browser's back button etc., you may have to do something especially crafty like post via AJAX (instead of calling "submit") then letting the browser do what it was going to do.