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FormView + DropDownList + ObjectDataSource Problem

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    Hi All,

    Hope this will be an easy one for you, but I can't figure it out!

    I have a formview on the webpage that displays information about a product. One of the values I need to display is a list of delivery options.

    These options come from a database table and are bound to the drop down via a ObjectDataSource.

    In the formview I want to bind the ProductDeliveryTypeId to the Id in the DropDownList, however I also need to add in a "N/A" option.

    I don't want the "Not Applicable" option in the DeliveryTypes table.

    Now, when I display the form I get an error telling me "'deliveryOption' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value"

    How can I manually add in the Not Applicable option to the dropdown at runtime?

    I've tried adding it on form load, FormView load and get the same error or another error because the dropdownlist hasn't been created yet.

    I know the code I have to add in the "NA" item is good becuase it works in another page.

    Please help!


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