Populating A DropDown List With Multiple Items?

Apr 30, 2010

I am running into some additional difficulties with dropdown lists, and I'm hoping you can correct my thinking.

I have a table populated with items; ITEM_ID, ITEM_NAME, ITEM_COST.

Here is my code:

[Code]....

With this code I get this error: DataBinding: 'ITEM' does not contain a property with the name '2'.

If I remove the assignment of DataSource to c1, the dropdown generates this error: 'DropDownList3' has a SelectedValue which is invalid because it does not exist in the list of items.

Parameter name: value

How should I code this so that the user is presented with a list of ITEM_NAMES, and that the ITEM_ID is stored in the value field so I can use it when the selection event is fired? I know I could databind the source directly to the dropdown list, but I am trying to understand the behind the scenes working of a dropdown list object.

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