retrieving data from sql into c#

I want to retrieve data from sql and put into a word field.
Thing is it all works partially.
It returns in the textbox the street, but not the zip or city as mentionned in the sql query, allthough if I run this query in sql it works fine.
Can anyone help ?

void GetAddresFromExternal_DoWork(object sender, DoWorkEventArgs e)
        {
            string LanguageMode = (string)e.Argument;
            string connectionString = "Data Source=xxxxxx\\xxxxxx;Initial Catalog=Contacts;user id=xxxxxxx;password=xxxxxx; Asynchronous Processing=true";
            string ToExternal = Convert.ToString(lstToExternal.Items[0]);
            string query = "SELECT dbo.ADDRESS_SQL.Address, dbo.ADDRESS_SQL.City, dbo.ADDRESS_SQL.Zip FROM dbo.ADDRESS_SQL INNER JOIN dbo.NAME ON dbo.ADDRESS_SQL.Name_Rec = dbo.NAME.Name_Rec WHERE (dbo.NAME.Last_Name + ' ' + dbo.NAME.First_Name = '" + ToExternal + "')";
            e.Result = FetchDataForExternal(connectionString, query);
        }
        void GetAddresFromExternal_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            FillTextBox(Globals.ThisDocument.txtTo, e.Result as StringCollection);
        }

        private void FillTextBox(Microsoft.Office.Tools.Word.PlainTextContentControl txtTo , StringCollection items)
        {
            foreach (string item in items)
            {
                Globals.ThisDocument.txtTo.Text += "\n" + item;
            }
        }
		private StringCollection FetchDataForExternal(string connectionString, string query)
        {
            SqlCommand command = null;
            SqlConnection connection = null;
            SqlDataReader reader = null;
            StringCollection results = new StringCollection();
            try
            {

                connection = new SqlConnection(connectionString);
                command = new SqlCommand(query, connection);
                command.CommandTimeout = 0;
                connection.Open();
                reader = command.ExecuteReader(CommandBehavior.CloseConnection);
                while (reader.Read())
                {
                    try
                    {
                        results.Add(reader.GetString(0));
                
                    }
                    catch (Exception ex) { }
                
                }

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            finally
            {
                command = null;
                if (reader != null) reader.Close();
                if ((connection != null) && (connection.State != ConnectionState.Closed))
                    connection.Close();
                reader = null;
                connection = null;
            }
            return results;
        }

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