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binding checkbox to non-boolean database fields

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2589 Feb 2,2003 06:23 PM Feb 12,2003 07:44 PM Windows Forms 1
Tags: FAQ
Asked On February 2, 2003 06:23 PM

I'm stuck dealing with a database that uses Char-1 fields for flags. Literally 'Y' or 'N'. What's the best approach to binding a checkbox to such a feild? Of course I need to be able to show the value, as well as change it. I guess I'll have to make a custom control, subclassing the checkbox. However, I dont' know what events to try to tap into. Is there some kind of event for "reading binding value" that I can override and give it "Y" when the box is checked? Also an event for "Setting binding value" that I can override and check when I see a 'Y' Any help greatly appreciated.

Replied On February 12, 2003 07:44 PM

CheckBox myCk = new CheckBox(); DataBinding db = new Binding( "Checked", myDataSet, "tablename.fieldname" ); myCk.DataBindings.Add( db); // inject delegates that translate bet. field and checkbox db.Format += new ConvertEventHandler( fromDbToControl ); db.Parse += new ConvertEventHandler( fromControlToDb );


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