Datagrid's datakey field

How does the datagrid's datakeyfield property support for composite keys? thanks in advance...
rxrazaAsked:
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ainapureCommented:
I do not think datekeyfield property supports composite keys. I have used a lot of datagrids lately in one of my project, and the easiest way i worked around was to create a surrogate key in the database. So, for eg. say if your clientid and orderid makes up a unique row, i inserted a new column client_orderid which is an autoincremented.. and then i used this new column as a datakeyfield in datagrid.

-amit

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rxrazaAuthor Commented:
I would love to do that, but the thing is we do not want to change the database design just to accomodate the datakey feature of the grid. I would rather prefer to pass values through hidden fields or bound columns. Anyways, thanks for your help.
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ferguslogicCommented:
don't modify the DB design..instead concatenate the two fields in your select statement and put these combined fields into a single DataGrid column.
Then set your datakeyfield to this column.

That is the best solution as the datagrid does not support composite keys.  My understanding is that ASP.net 2.0 will have a successor control (GridView I believe) which will support this composite key functionality.
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