ComboBox Integer

[HEISENBERG]

Hi

I have connected my program to an access database file, and when I select the numbers in the combobox (1, 2, 3 etc.) I want to automatically fill the other textboxes in the form .. it works if it's a string .. for example if i select a string (e.g. name) in the combobox it automatically fills the other textboxes, but it doesn't work if it's an integer.

I know I must convert to int, but I don't know how because i have a query:

private void iD_FurnizorComboBox_SelectedIndexChanged_1(object sender, EventArgs e)
        {
            try
            {
                connection.Open();
                OleDbCommand command = new OleDbCommand();
                command.Connection = connection;
                string query;
                query = "select * from Furnizori where id_furnizor = '" + iD_FurnizorComboBox.Text + "'";
                int query_test = int.Parse(query);
                command.CommandText = query;
                OleDbDataReader reader = command.ExecuteReader();
                while (reader.Read())
                {
                    numeTextBox.Text = reader["nume"].ToString();
                    adresaTextBox.Text = reader["adresa"].ToString();
                    localitateTextBox.Text = reader["localitate"].ToString();
                    judetTextBox.Text = reader["judet"].ToString();
                }
                connection.Close();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                connection.Close();
            }
        }

I don't know where to parse the string to int.. thank you!!