adding items to a combo box depending upon the value given

[GR M]

I have a unbound datadridview named dgv_add, which contains columns of type datagridviewcol umn types and the another column of type datagridviewcom bobox type. I want to add specific items from a database depending upon the inputted text in the column of 1st type. I mean I want to retrieve specific column from a database and add the available items to the combobox after inputting text in the column of 1st type.
eg:
DGV_Add-> datagridview
Mdcn_Name->datagridviewco lumn
Mdcn_Pack->datagridviewco mbobox

PLZ HELP.
Thanks In advance.