load data into combobox which is in datagridview.

Question

Hi.

    I am developing an windows application in c#. i am having a datagridview which having the columns. in that columns i am having a 3 combobox. i want to load data into the combobox when the form is load. the combobox can't add by program at the end of the datagridview because that's position is 3rd, 4th and 5th. i know only to load data when the combobox add by program. how to load the data, is it possible or is there any other way?

 

Thanks in advance.