C#

how to store the value selection on calendar in database

WebClient webClient = new WebClient();
webClient.UseDefaultCredentials = false;
webClient.Credentials = new NetworkCredential(strUsername, strPassword);
webClient.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
webClient.DownloadFile(url, @strOutputFile);

SpeechSynthesizer ss;
        private void Form1_Load(object sender, EventArgs e)
        {
            ss = new SpeechSynthesizer();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Read (button_click)
            ss.Rate = SpeedTrackBar.Value; //sets speed
            ss.Volume = VolumeTrackBar.Value; //sets volume
            try
            {
                switch (comboBox1.SelectedIndex)
                {
                    case 0:
                        ss.SelectVoiceByHints(VoiceGender.NotSet);
                        break;
                    case 1:
                        ss.SelectVoiceByHints(VoiceGender.Male);
                        break;
                    case 2:
                        ss.SelectVoiceByHints(VoiceGender.Female);
                        break;
                    case 3:
                        ss.SelectVoiceByHints(VoiceGender.Neutral);
                        break;
                    default:
                        break;
                }
                ss.SpeakAsync(textBox1.Text);
            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            //Pause (button_click)
            ss.Pause();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            //Continue (button_click)
            ss.Resume();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            //Record (button_click)
            SpeechSynthesizer ss = new SpeechSynthesizer();
            ss.Rate = SpeedTrackBar.Value;
            ss.Volume = VolumeTrackBar.Value;
            SaveFileDialog sfd = new SaveFileDialog();
            sfd.Filter = "Wave Files| *.wav";
            sfd.ShowDialog();
            ss.SetOutputToWaveFile(sfd.FileName);
            ss.Speak(textBox1.Text);
            ss.SetOutputToDefaultAudioDevice();
            MessageBox.Show("Recording Completed..", "T2S");
        }

[Serializable]
public class MyList : List<MyClass>
{
    public string X = string.empty;
}

protected void Function()
{
    MyList L = new MyList();
    L.X = "String";

    XmlSerializer serializer = new XmlSerializer(typeof(MyList));

    StreamWriter Sw = new StreamWriter(Filename);

    serializer.Serialize(Sw, L);

    Sw.Dispose();
}