[C#/WINFORM] RichTextBox 클래스 : 위/아래 첨자 사용하기

■ RichTextBox 클래스에서 위/아래 첨자를 사용하는 방법을 보여준다.

TestProject.zip

다운로드

▶ MainForm.cs

using System;
using System.Drawing;
using System.Windows.Forms;

namespace TestProject
{
    /// <summary>
    /// 메인 폼
    /// </summary>
    public partial class MainForm : Form
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainForm()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainForm()
        {
            InitializeComponent();

            #region 이벤트를 설정한다.

            Load += Form_Load;

            #endregion
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private
        //////////////////////////////////////////////////////////////////////////////// Event

        #region 폼 로드시 처리하기 - Form_Load(sender, e)

        /// <summary>
        /// 폼 로드시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void Form_Load(object sender, EventArgs e)
        {
            this.richTextBox.Text = "2H2 + O2 = 2H2O\n32 + 42 = 52";

            float fontSize = this.richTextBox.Font.Size;

            Font smallFont = new Font(this.richTextBox.Font.FontFamily, fontSize * 0.75f);

            int[] subscriptIndexArray = { 2, 7, 13 };

            int offset = (int)(fontSize * 0.5);

            foreach(int subscriptIndex in subscriptIndexArray)
            {
                this.richTextBox.Select(subscriptIndex, 1);

                this.richTextBox.SelectionCharOffset = -offset;
                this.richTextBox.SelectionFont       = smallFont;
            }

            int[] superscriptIndexArray = { 17, 22, 27 };

            foreach(int superscriptIndex in superscriptIndexArray)
            {
                this.richTextBox.Select(superscriptIndex, 1);

                this.richTextBox.SelectionCharOffset = +offset;
                this.richTextBox.SelectionFont       = smallFont;
            }

            this.richTextBox.Select(0, richTextBox.Text.Length);

            this.richTextBox.SelectionAlignment = HorizontalAlignment.Center;

            this.richTextBox.Select(0, 0);
        }

        #endregion
    }
}