C# - convertendo string num array de string

Aqui está um exemplo de como converter uma string
num array de string.

Veja abaixo uma imagem do programa em execução:

Veja abaixo o código do programa:

//C# - CONVERTENDO STRING NUM ARRAY DE STRING

using System;

using System.Collections;

using System.Collections.Generic;

using System.Drawing;

using System.Windows.Forms;

namespace Arr {

    public partial class Form1 : Form {

        System.Text.StringBuilder str_1 = new System.Text.StringBuilder ( );

        string st = " ";

        /*============================================================*/

        void Informe ( PaintEventArgs e ) {

            Graphics dc = e.Graphics;

            Font myFont = new System.Drawing.Font ( "Helvetica", 11,

                FontStyle.Italic );

            Brush myBrush_1 = new SolidBrush ( System.Drawing.Color.Red );

            Brush myBrush_2 = new SolidBrush ( System.Drawing.Color.Blue );

            Brush myBrush_3 = new SolidBrush ( System.Drawing.Color.Black );

            dc.DrawString ( "Por: ", myFont, myBrush_1, 170, 210 );

            dc.DrawString ( "Samuel Lima ", myFont, myBrush_2, 200, 210 );

            dc.DrawString ( "sa_sp10@hotmail.com ", myFont, myBrush_3, 170, 225 );

        }

        /*============================================================*/

        public void Ini_Array ( ) {

            int i = 0;

            do {

                if ( i % 10 == 0 ) {

                    st += "\n";

                }

                if ( i >= 0 && i <= 9 )

                    st += ( "0" );

                st += i + " ";

                i++;

            } while ( i < 100 );

            string [ ] strBd = new string [ 10 ];

            i = 0;

            strBd [ i ] = st;

            str_1.Append ( strBd [ i ] );

        }

        /*============================================================*/

        protected override void OnPaint ( PaintEventArgs e ) {

            this.Size = new System.Drawing.Size ( 600, 300 );

            this.Text = "C# - CONVERTENDO STRING NUM ARRAY DE STRING";

            this.BackColor = Color.LightGray;

            Graphics dc = e.Graphics;

            Pen BluePen = new Pen ( Color.Blue, 10 );

            dc.DrawRectangle ( BluePen, 5, 5, 575, 250 );

            Font myFont_1 = new System.Drawing.Font ( "Consolas", 12,

                FontStyle.Italic );

            Font myFont_2 = new System.Drawing.Font ( "Consolas", 11,

                FontStyle.Italic );

            Brush myBrush_1 = new SolidBrush ( Color.Red );

            Brush myBrush_2 = new SolidBrush ( Color.Black );

            dc.DrawString ( "C# - CONVERTENDO STRING NUM ARRAY DE STRING",

                myFont_1, myBrush_1, 100, 15 );

            dc.DrawString ( " " + str_1, myFont_2, myBrush_2, 170, 20 );

            Informe ( e );

        }

        /*============================================================*/

        public Form1 ( ) {

            Ini_Array ( );

        }

    }

    /*============================================================*/

    static class Program {

        /// <summary>

        /// The main entry point for the application.

        /// </summary>

        [STAThread]

        static void Main ( ) {

            Application.EnableVisualStyles ( );

            Application.SetCompatibleTextRenderingDefault ( false );

            Application.Run ( new Form1 ( ) );

        }

    }

}