DataGridViewComboBoxColumn Binding

Question

Right this is driving me nuts. I feel like I have read every post on the web with still nothing sinking in. All im trying to to is bind to a List

gvCompany.DataSource = BLL.Inventory.Company.GetAllActive(forceReload);
DataGridViewComboBoxColumn stateColumn = GridViewComboBoxColumn();
DataGridViewComboBoxCell cellCombo = new DataGridViewComboBoxCell();
stateColumn.DataPropertyName = "StateName";
stateColumn.CellTemplate = cellCombo;
gvCompany.Columns.Add(stateColumn);
 private static DataGridViewComboBoxColumn GridViewComboBoxColumn()
        {
            DataGridViewComboBoxColumn sColumn = new DataGridViewComboBoxColumn();

           sColumn.DataSource = BLL.Inventory.State.GetAllActive();
           sColumn.DisplayMember = "Name";
           sColumn.ValueMember = "OID";
            return sColumn;
        }

Can some one show me what im doing wrong? It Binds but I dont get any drop down,