View 如何在vb.net中显示datagrid中的combobox

我在下面有这个查询，我想显示根据sales_id售出的商品，而不重复旧id。另一个问题是如何创建组合框数据网格视图：

Private Sub filldatagrid()
        Dim myTableName As String
        myTableName = txtid.Text
        winclass.filldatagrid(DataGridView1, "select inventory.inv_name,sales_data.sales_id,sales_data.quantity,sales_data.sum_total from sales_data,inventory where sales_data.inv_id=inventory.inv_id ")

    DataGridView1.Columns(0).HeaderText = "ID"
    DataGridView1.Columns(0).Visible = True
    DataGridView1.Columns(1).HeaderText = "name"
    DataGridView1.Columns(1).AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill
End Sub