Retrieving Data From SQL Table

 this is a simple problem but it's just driving me mad as it's not reading from my dB. basically, I've have reviews stored in my dB and want to display them in a textbox by clicking on a button called btnReviews. I think the problem might be that there is too much text stored per row of the table (as it is a review), but I have the datatype set as text in sql. here's the simple un-errorred code I have behind the button. any ideas where I went wrong. i've a feeling it's something small but it's just taken too long to figure out.
protected void btnReviews_Click(object sender, EventArgs e)
    {
        String strConn = ConfigurationManager.ConnectionStrings["conLocalDatabase"].ConnectionString;
        SqlConnection dbConnection = new SqlConnection(strConn);
        SqlCommand dbCommand = new SqlCommand("Select [ReviewC] From [Review])", dbConnection);
 
        dbCommand.Parameters.AddWithValue("Review", txtReviewView.Text);


        try
        {
            dbConnection.Open();
            dbCommand.ExecuteNonQuery();
        }
        catch (SqlException ex)
        {
            Console.WriteLine(ex.ToString());
        }
        finally
        {
            if (dbConnection != null)
            {
                dbConnection.Close();
            }
        }
       
    }