C# How to eliminate duplicate values from comboBox?
<p>I would like to eliminate duplicates from OleDbDataReader
Should be easy but I'm spinning my wheels. Any help would be appreciated!</p>

<pre><code>        private void Database_Load(object sender, EventArgs e)
        {         
            try
            {
                connection.Open();
                OleDbCommand command = new OleDbCommand();
                command.Connection = connection;
                string query = "select * from PPAPdatabase";
                command.CommandText = query;                

                OleDbDataAdapter da = new OleDbDataAdapter(command);
                dt = new DataTable();
                da.Fill(dt);
                dataGridView1.DataSource = dt;

                OleDbDataReader reader = command.ExecuteReader();
                while (reader.Read())
            {
                comboBox_Owner.Items.Add(reader["Owner"].ToString());                   
            }
</code></pre>