Web Forms :: Update Dropdown List Inside A Repeater?

Jan 4, 2011

I'm new in asp.net and javascript. I got a problem.

I have a repeater which contains dropdown list in it.

The items in the dropdown list are all the same at fist.

But if i select a item in one dropdown, then the selected item will be deleted in the other dropdown list.

For example

A, B, C, D,E are the five items in dropdown list, and repeater has three lines.

If A is selected in the dropdown list in the first line of repeater, then the dropdown list in the other lines will only have four items to select, they are B, C, D, E.

If then D is selected in the dropdown list in the third line of repeater, then the dropdown list in the second line will only have B, C, E to choose.

I can do this in csharp code, how can i do it in .aspx page?

The performance is not good using csharp code.

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