Javascript code from ToolkitScriptManager written on PDF file

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C#

ASP.NET

Ajax

C#4.0

Gridview

PDF

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Hello

I'm developing a web application on Visual Studio Web Developer 2010. I have a page with Calendar Extender controls and a gridview that list some information depending from the date range given. To generate a "report" about the list I generate a PDF file using ItextSharp library and works very good, but, them that the table from gridview is written on PDF file appear some code on javascript:

//(function() {var fn = function() {$get("ctl00_ToolkitScriptManager1_HiddenField").value =
'';Sys.Application.remove_init(fn);};Sys.Application.add_init(fn);})();//

I have other page using the same function to convert PDF's files and works good, the only difference is that pages don't have ajax controls, so this code comes from ToolkitScriptManager.

I don't have idea about why presents this behavior.

I'm using Ajax Control Toolkit 3.5 - upload in September 2012 release.

Any idea about this problem?

Thanks for your time.