Hello ,
suppose you have one datagridview and their are two columns . one of them is combobox named as
cmbproduct and other is textbox named as txtother. and if you want to bind the combobox value from dataset then
cmbproduct.DataSource = dsproduct.Tables[0].Columns[0].Table.DefaultView;
cmbproduct.ValueMember = "PId";
cmbproduct.DisplayMember = "Pname";
put this code in window_load or other event .
thanks
Animesh