iam new in asp.net in my page
i hav e1 drop down list where is is to filter shif code , ddl text field contaoins shift  desc and value contains shift code.
when i select particular shift description it has to show all the 7 days shift description on text boxes  iam using informix database
 i have 1 dropdownlist which contains shiftcode & shift decription. where shift code is datavalue filed and desc is dat text field. ddl is conected to sql datasource.
i am getting this error:

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