update parameter question in detailView?

Hi,

I have this detailview and i am using a dropdown in the editform.
I also used sqldatasource to update the record by passing the parameter.
Without the dropdown in the editform (all regular textboxes), it gets update fine.

But when I insert the dropdown in the edittemplate, it doesn't get update and no error pops up.
I don't know how to debug this since I don't get any errors when I run it.

As an example, say I have this address table(ID,Name,Address,Type)

I thought I can use fixed parameter and controlparameter.
But it doesn't get updated.

How can I debug this??
Should I stay away from the sqldatasource and use the stored proc or code in code behind page??

<asp:sqldatasource id=sqldatasource1
selectcommand="select id,name,address,type from address where (id=@id)"
updatecommand = "update address set name=@name,address=@address,type=@type where (id=@id)">
<selectParamenters>
<asp:querystringparameters name=id querystringfield=id type=int/>
</selectparamenters>
<updateparameters>
<asp:parameter>...
<asp:controlparameter>...
</updateparameters>
 
 
I thought I can use fixed parameter and controlparameter.
But it doesn't get updated.

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