Как программно выделить нужную строку в ComboBox

//...
        public string UserName
        {
            get { return cboUserName.SelectedValue.ToString(); }
            set { cboUserName.SelectedValue = value; }
        }
//...
        private void FormEditUserFix_Load(object sender, EventArgs e)
        {
            //...
            OdbcConnection cnn = new OdbcConnection();
            cnn.ConnectionString = Program.cnnString;
 
            DataSet ds = new DataSet();
 
            OdbcDataAdapter daUser = new OdbcDataAdapter("SELECT iduser, nameuser FROM users
            ORDER BY nameuser", cnn);
 
            daUser.Fill(ds, "AllUsers");
 
            cboUserName.DataSource = ds.Tables[0];
            cboUserName.DisplayMember = ds.Tables[0].Columns[1].ToString();
            cboUserName.ValueMember = ds.Tables[0].Columns[0].ToString();
            //...
        }
//...

comBobox1.SelectedIndex=1;

SqlCeConnection connection = new SqlCeConnection();
connection.ConnectionString = "Data Source=D:\\Northwind.sdf";
SqlCeDataAdapter adapter = new SqlCeDataAdapter("SELECT * FROM Products", connection);
dataSet = new DataSet();
adapter.Fill(dataSet, "Products");
bindingSource = new BindingSource(dataSet, "Products");
comboBox1.DataSource = bindingSource;
comboBox1.DisplayMember = "Product Name";
//comboBox1.ValueMember = dataSet.Tables[0].Columns[0].ToString();
 
/*****/
 
 
// Указывает ID товара и перемещаемя на нужную позицию
bindingSource.Position = bindingSource.Find("Product ID", 12);