[Solved] page with multiple comboboxes loads slow

[newbie]

I have a page with a Tabstrip.
One of my tab pages has around 7 combo boxes with large data (around 50 rows)
It takes a long time for the page to load.
I have tried various options like disabling ViewState on combo boxes but that does not help.
If I switch the combo boxes to ASP.NET Dropdownlists the page renders fast.

Is there a way to increase the performance with the radComboBoxes?

[Rosi]

Hello ,

You can populate RadComboBox using the LoadOnDemand functionality or using a web service.
Please see our online examples:

Load On Demand

Populate from WebService


Regards,
Rosi
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[newbie]

Thanks.
LoadonDemand is faster.But is the slow load with multiple combo boxes an expected behaviour?

[Helen]

Hi,

It is not the expected behavior and it depends on your code. There are various tips and tricks how to speed up the asp.net site. For example you may take a look at this article: http://visualstudiomagazine.com/features/article.aspx?editorialsid=1748

Also could you check your web.config file? You may have forgotten to remove the debug="true" from the compilation section. 


Regards,
Helen
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center

[Jacky Chau]

I think what the OP is trying to say is:

Is it normal that multiple regular dropdowns are soooo much faster than multiple RadComboBoxes. 

[Nikolay]

Hi there,

Since RadComboBox control is far more complex than the standard dropdown it is expected to be slower as it uses much more built-in JS and skin resources to provide its advanced behavior. However, there are tips and tricks to make the combobox as fast as possible. Such a tip is using the Load On Demand feature that let you load an empty combobox when the page is first loaded. Then, the items can be added as the user types in the input field. This will definitely save loading time and will improve the combobox speed.

Also, I suggest that you refer to the following post on optimizing tips for RadControls:
http://telerikwatch.com/2008/04/optimization-tipsthe-rad-managers-for.html

Greetings,
Nick
the Telerik team

Instantly find answers to your questions at the new Telerik Support Center