web services - JQuery Autocomplete asp.net Webservice returning key/value pair -

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i have been using example

http://www.aspsnippets.com/articles/using-jquery-autocomplete-plugin-in-asp.net.aspx

in order return data webservice jquery autocomplete. trying find out there way return key/value pair webservice, instead of returning single string 

context.response.write(sb.tostring());


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