On May 11, 2009, at 9:48 AM, Sibylle Koczian wrote:
> It's clear I made quite wrong assumptions about dDropdownList (and
> about
> the other list controls?). I thought moving through the choices list
> would move through the records of the dataset and show the content of
> the current DataField, but instead it seems to put the current value
> _into_ the DataField of the current record, which doesn't move. Right?
That's exactly correct. You are binding to a column in the dataset,
and changing the value in the control changes the value in the current
record of the dataset.
It would probably make more sense to use a grid, in which navigating
to different records moves through the data set. Alternatively, if you
want a list control, you can certainly do this, but data binding is
not what you want. Instead, populate the list as explained on the
wiki, and then in the ValueChanged event of that list control, call
the requery of the 'dinge' bizobj, setting the parameter to the
selected value of rub_id. You'll need to add a 'where' clause to the
BizDinge class:
self.addWhere(" rub_id = %s ")
To set the parameter, you'd add code like this:
val = myDropdownList.KeyValue
biz = self.Form.getBizobj("dinge")
biz.setParams((val, ))
self.Form.requery("dinge")
-- Ed Leafe
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