Showing search results in a Listbox while entering text in a textbox

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C#

Hi,
I have a list box that am trying to run some filter query so that what is displayed on the listbox is the result of the filter query. Below is my code that is actually bringing an error

        private DataView view;
        private void txtSearch_TextChanged(object sender, EventArgs e)
        {
            if(radioButton1.Checked)
            {
                string input = txtSearch.Text;
                string conn = "Connection String here";
                MySqlConnection myconn = new MySqlConnection(conn);
                string sql = "(Column1 LIKE '%" + sea + "%' OR Column2 LIKE '%" + sea + "%' OR Column3 LIKE '%" + sea + "%')";
//Column1, Column2 and Column3 represent some of my table columns
                MySqlDataAdapter da = new MySqlDataAdapter(sql, myconn);
                DataTable dt = new DataTable();
                da.Fill(dt);
                view = dt.DefaultView;
                listBox1.DataSource = view;
            
            }
}

The Error that am getting is that what is displayed on the listbox is this

System.Data.DataRowView

Please kindly help me identify where i did a mistake. I will appreciate any idea shared.
Thanks