related combobox

[Selami]

hello team.I m nebie for telerik...
My questions is related combobox fill by parameters without page load!....
I m .net developer but i dont know javascript because of that i choose telerik set....I found a solution at this article
http://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/multiplecomboboxes/defaultcs.aspx

but this problem solved by Javascript function...I couldnt understand this...Are there anybody to help me?
our goal is same already....
Countries->Cities->districts related combo....yes it worked fine for this sample....but when i have another  related combo problem i cant write javascript function what will i do?

[Princy]

Hello,

As per the demo link you send,
On pageLoad() event : access the Comboboxes and set that in global variables for reuse.
On LoadCountries() event : If its index is greater than zero(ie,items are selected), then fires ItemsRequested event of countries combobox with continentID as parameter. LoadCities() also works like LoadCountries().

Thanks,
Princy.

[Selami]

if page i understand it sample already...but when click button and fill combo or when i clicked datagrid fill combo etc...
how will i do?For example
i checked checkbox and combobox will fill with in the textbox parameter ...i cant do this with javascript....As you say, i can do without ajax(Page is postback)
I wanna say that when i wanna use combobox with ajax is there any solutions page without  postback and without javascript?

[Ivana]

Hello Selami,

My suggestion is to explore the online demo which you have pointed out: RadComboBox / Related ComboBoxes.
At the right top corner of the code-block showing the implementation of the demo, there is a link which says: "Demo isolation steps"  -- it shows step by step tutorial how to isolate the online demo in a sample web page. You could follow these steps to run the demo locally and explore its implementation.

Regards,
Ivana
the Telerik team