How to bind 3 ComboBoxes in windows form?

[shayacov]

Hello,
I have 3 Combos on a toolbar which i need to bind to sql database (using linq).
On my form i have several data text fields.

What i need to do is this:
Combo1 = bind it to a specific linq query that i make that can bring my a list from my db.
combo2 = bind it to a specific linq query that i make according to the selection of combo1.
combo3 = again, linq query according to the selection on combo1.

After these 3 are linked, i wanna put all the details into the text boxes
according to the selection of combo2 BUT if my linq query into combo2
gave me null items, i need to show details according to combo1 selection.

Is that even possible to do using the binding source of vb.net?

Thanks.

[kvprajapati]

Take a look at this article - http://msdn.microsoft.com/en-us/library/w67sdsex.aspx

...
var q = from c in db.TableName select c.Column1
comboBox1.DataSource = q.ToList()
...