Ah, I see the delima. I didn't realize the two questions were related. I needed to do the same thing and also used dataSets for that. Below is what I did but put them in a DataGridView. I think in an earlier post Kevin eluded to using Entities this way but I never could figure it out.
Tim

>>All that said, if you do away with the dataset and just bind directly to the Business Object you won't have this issue.
>
>My confusion with using a BO is that I cannot yet figure out how to have one control on my form display one set of data from a BO, (i.e. a stored proc result), while having another control on the form that uses the same BO, but displays a different data result set. From my first testing, it seems that when you fire a BO call, all controls that are bound to that BO will update to the same exact data set.
>
>Imagine one combobox displaying active customers (cust_status="A"), and another combobox displaying inactive customers (cust_status="I").
>
>How would you structure this using a BO model? I'm wanting to learn the BO stuff, but I do not yet grasp some of the fundamentals like this.
>
>That's why I thought DataSets might be the answer, but maybe not.
>
>i.e.
>
>dsActiveCustomers=BO.GetActiveCustomers();

this.oItems = (DisplayItems)RegisterBizObj(new DisplayItems());

// Get News Items
this.dsNews = this.oItems.GetItemsDataSetByType(DisplayItemType.News, false, "News");
if (this.dsNews.Tables[0].Rows.Count > 0)
{
     this.grdNews.DataSource = dsNews;
     this.grdNews.DataBind();
}
else
     this.lblNews.Visible = false;

// Get Event Items
this.dsEvents = this.oItems.GetItemsDataSetByType(DisplayItemType.Events, false, "Events");
if (this.dsEvents.Tables[0].Rows.Count > 0)
{
     this.grdEvents.DataSource = dsEvents;
     this.grdEvents.DataBind();
}
else
     this.lblEvents.Visible = false;

>dsInactiveCustomers=BO.GetInactiveCustomers();
>
>then bind each ds to it's combobox?
>
>Also, for now, I am not so much wanting to BIND for CRUD purposes, I just want to use the combboxes to get user choices, and the run SQL statements to pull back and display static data based on what they choose.