error: scriptloader.loadscripts cannot be called..........

[NawazAhmed]

Hi,
I am using visual studio 2008. my project is a web-based project.
I am using ajax toolkit. Getting this error when user click button very fast.
"Sys.InvalidOperationException: ScriptLoader.loadScripts cannot be called while the ScriptLoader is already loading scripts."

After googling I found this solution where u hav to add some javascript code
http://forums.asp.net/t/1173891.aspx
But the thing is I am getting another error after adding this code. i.e. Sys is undefined.
I checked the whole web config file and googled some solutions which says to add some handlers and stuff.....did that by sys error is still there. Its the runtime error.

I also find the solution to make the buttons disabled and the enable after the page loads but that not very practical in my case since I got so many buttons and so many pages.....

Looking forward for a good and quick solution.
Thanks.

[Plater]

Well I don't know what your sis error is, I think it would be the by-product of your attempts to implement workarounds.

You just need to make sure the ajax routines aren't getting called before a previous routine completes.
Seems like setting/checking a simple boolean in the javascript should handle this?

[NawazAhmed]

THanks for the reply..
Could u please tell me in detail or provide code for the same...

The sys error is on the sys below which comes from the javascript code as mentioned b4.

var prm = Sys.WebForms.PageRequestManager.getInstance(); 
 

[Plater]

That looks like you are sticking .NET code into a javascript section, I don't think that works.

Well if you had a function that handles the ajax requests, and a boolean value:
psuedo code:

bool CanDoAjax=true;
 
function DoAjax(var ajaxstuff)
{
   if(CanDoAjax)
   {
      CanDoAjax=false;
      //....do all other ajax stuff here
     CanDoAjax=true;
   }
}
 

That's just a real basic rundown, i'm sure it will be a little more complex, but the principal idea should be the same

[NawazAhmed]

I never wrote any .net code in this post.....I think u did not get me.
In the previous reply the code is written in javascript...u can c the link below.
the recomended solution which is in javascript
and when I try to implement the above mentioned solution I get error: Sys is Undefined....which is on this line

var prm = Sys.WebForms.PageRequestManager.getInstance(); 

[NawazAhmed]

Don't worry I got it......................
Followed the same link what I provided earlier and the trick was u have to put that javascript code below the script manager tag......not in the head tag.
Thanks 4 all ur help!!!!!