[Solved] radcombobox 'e.Context error'

[Afo]

I have 5 comboboxes and I need to filter 4 of them based on what was selected in the 5th one. I have implemented this based on the example here:
http://www.telerik.com/community/forums/aspnet-ajax/combobox/related-comboboxes-server-side.aspx
It works for the 1st combobox but not for the other 3. I keep on getting 'The given key was not present in the dictionary.'. Can you show an example of filtering 4 comboboxes based on selected value of 1 combobox.
thanks.

[Simon]

Hi Afo,

Please make sure that you are handling the client-side ItemsRequesting event of all RadComboBoxes after the first and you are using exactly the same key (e.g. previousComboBoxValue) in the server-side ItemsRequested event handler when accessing the Context object there.

Greetings,
Simon
the Telerik team

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[Afo]

I am...but in case I'm missing something, can you show me a code sample.
thanks.

[Simon]

Hello Afo,

Please see the code sample provided in the referred forum thread - http://www.telerik.com/community/forums/aspnet-ajax/combobox/related-comboboxes-server-side.aspx.

In your case you need to do the same configuration for each subsequent pair after the first one:

• RCB2: ItemsRequesting gets the value of RCB1;
• RCB3: ItemsRequesting gets the value of RCB2;
• ...etc.

If you still experience the issue, please paste here the definitions of your RadComboBoxes as well as their client-side and server-side event handlers' code (ItemsRequesting and ItemsRequested).

Regards,
Simon
the Telerik team

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Watch a video on how to optimize your support resource searches and check out more tips on the blogs.

[Afo]

ok, thanks... that works.