C#

<pre lang="c#">
const string DEFAULT_CONNECTION_KEY = "defaultConnection";
ConnectionStringsSection section = (ConnectionStringsSection)config.GetSection("connectionStrings");
                    sConName = ConfigurationManager.AppSettings[DEFAULT_CONNECTION_KEY];
                    config.ConnectionStrings.ConnectionStrings[sConName].ConnectionString = sConCrypt;
config.Save(ConfigurationSaveMode.Full, true);
                    ConfigurationManager.RefreshSection("connectionStrings");

using System;
using System.Windows.Forms;

namespace Program
{

    public partial class Form1 : Form
    {     
        MySqlConnection cn = new MySqlConnection();
        iTextSharp.text.pdf.PdfWriter writer;

        const int panelHeight = 730;
        const int panelWith = 1070;
        private Label[,] lbs = new Label[70,50];
              

        public Form1()
        {
            InitializeComponent();
            initBoard();            
        }
       
        private void initBoard()
        {
            panel1.Size = new Size(panelWith, panelHeight);
            panel1.Visible = false;
            anel1.BackColor = SystemColors.ControlText;
        

            int cc, ff;
            for (int c = 0; c < 70; c++)
            {
                cc = c * 15;
                for (int f = 0; f < 50; f++)
                {
                    ff = f * 20;
                    Label lb = new Label();                    
                    lbs[c, f] = lb;                   
                    lb.Size = new Size(15, 20);
                    lb.Font = new System.Drawing.Font(label1.Font.Name, 12, FontStyle.Bold);                    
                    lb.Location = new System.Drawing.Point(cc + 10, ff + 10);
                    lb.Parent = panel1;
                    lb.ForeColor = Color.WhiteSmoke;
                }
            }

        }

        private void button1_Click(object sender, EventArgs e)
        {            
                        
            for (int c = 0; c < 70; c++)
                for (int f = 0; f < 50; f++)
                    lbs[c, f].Text =  (f % 10).ToString();

            panel1.Visible = true;

        }


    }
}