How to fill combobox column in DataGridView in vb.net?

How to fill combobox in datagridviewcell vb.net:

Dim dgvcombo As DataGridViewComboBoxCell
dgvcombo = DataGridView1.Rows(2).Cells(0)
dgvcombo.Items.Add("comboitem1")
dgvcombo.Items.Add("comboitem2")