when split msg variable to more lines it not give me values in lines? C# .NET

Problem

When split msg variable to more lines it not give me values in lines ?
msg variable in debug give me text scanning bellow

Details

i work in windows form c# vs 2015

i using bar code reader to read qr code

bar code scanner working as USB keyboard and define as HID Drivers

if i replace msg variable with text box it working in read data and spiting

SUCCESS so that

what is the problem in splitting below code ?

text scanning :

30 General Conference of Arab Pharmaceutical Unions

UserName : khalid ramzy

Country : Saudia

Membership : part

Serial : 1014

my code

public partial class Form1 : Form

        DateTime _lastKeystroke = new DateTime(0);

        List<char> _barcode = new List<char>(10);

        public Form1()

            InitializeComponent();

        private void Form1_KeyPress(object sender, KeyPressEventArgs e)

            TimeSpan elapsed = (DateTime.Now - _lastKeystroke);

            if (elapsed.TotalMilliseconds > 100)

                _barcode.Clear();

            // record keystroke & timestamp

            _barcode.Add(e.KeyChar);

            _lastKeystroke = DateTime.Now;

            // process barcode

            if (e.KeyChar == 13 && _barcode.Count > 0)

                    string msg = new String(_barcode.ToArray());

                string[] lines = msg.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);

                if (lines.Length > 5)

                    string msg1 = lines[1].Substring(lines[1].IndexOf(":") + 1);

                    label3.Text = msg1;

                    string msg2 = lines[2].Substring(lines[2].IndexOf(":") + 1);

                    label4.Text = msg2;

                    string msg3 = lines[3].Substring(lines[3].IndexOf(":") + 1);

                    label5.Text = msg3;

                    string msg4 = lines[4].Substring(lines[4].IndexOf(":") + 1);

                    label6.Text = msg4;

                    label2.Text = lines[5].Substring(lines[5].IndexOf(":") + 1);

                    _barcode.Clear();

msg variable in debug have values of scanning qr code

but problem now

How to split them to lines as above ?

C# .NET - when split msg variable to more lines it not give me values in lines?