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Browsing slowest on IE

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Lasly
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Lasly asked on 23 Jul 2011, 08:49 AM
Hi,
I'm using Rad Control ASP.NET and I've done some performance test with Opera and Internet Explorer 8.0.
I've one ASPX wich includes ASCX, my ascx are loaded in RadMultiPage control dinamically.

I'm using RadAjaxPanel and UpdatePanel to do Asyn request, and my page are very slow into IE, not in Opera.

I think that the problem is Internet Explorer.
Do you know any suggestion to resolve this problem?

I'm using RadAjaxManager, I tried to use also events client-side because I thought to leave in server-side only the rebind and the request to database, but it continues to be slow.

How I do to resolve this?

Every our customer uses Internet Explorer, we want be cross browser but we can't offer speed.

Thanks in advance

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Dobromir
Telerik team
answered on 26 Jul 2011, 03:09 PM
Hi Lasly,

Actually the performance slow down comes from the browser, not from the server which servers the page. All ajax controls (including RadControls for ASP.NET AJAX) uses JavaScript in order to perform the required actions related to the DOM elements (move, create, etc.). As you know, this is a scripting language (which is significantly slower than C# or C++ for example) and it is interpreted by the browser.

In the following help article you can find tips on optimizing the generated output and load time of RadControls:
Optimizing output, page load time and the overall performance of RadControls for ASP.NET AJAX

Best wishes,
Dobromir
the Telerik team

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Lasly
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Dobromir
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