How do I trim a Combobox?

Question

Hello all. I have added a combobox that is solution that links to an SQL server using a dataset.

        private void Template_Load(object sender, EventArgs e)
        {
            this.suppliersTableAdapter.Fill(this.spartanDataSet.Suppliers);
        }

My question is, how do I trim the records in the Combobox? I found this absolutely no problem with a complete Datagrid but this seems to be causing me a slight problem.

 

 

Thanks all!