[C#/WPF] RichTextBox 클래스 사용하기

■ RichTextBox 클래스를 사용하는 기본적인 방법을 보여준다.

TestProject.zip

다운로드

▶ MainWindow.cs

using Microsoft.Win32;
using System;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Field
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>
        /// 리치 텍스트 상자
        /// </summary>
        private RichTextBox richTextBox;

        /// <summary>
        /// 필터
        /// </summary>
        private string filter = "Document Files(*.xaml)|*.xaml|All files (*.*)|*.*";

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainWindow()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainWindow()
        {
            Width      = 800;
            Height     = 600;
            Title      = "RichTextBox 클래스 사용하기";
            FontFamily = new FontFamily("나눔고딕코딩");
            FontSize   = 16;

            this.richTextBox = new RichTextBox();

            this.richTextBox.VerticalScrollBarVisibility = ScrollBarVisibility.Auto;

            Content = this.richTextBox;

            this.richTextBox.Focus();
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Static
        //////////////////////////////////////////////////////////////////////////////// Public

        #region 프로그램 시작하기 - Main()

        /// <summary>
        /// 프로그램 시작하기
        /// </summary>
        [STAThread]
        public static void Main()
        {
            Application application = new Application();

            application.Run(new MainWindow());
        }

        #endregion

        ////////////////////////////////////////////////////////////////////////////////////////// Instance
        //////////////////////////////////////////////////////////////////////////////// Protected

        #region PREVIEW 텍스트 입력시 처리하기 - OnPreviewTextInput(e)

        /// <summary>
        /// PREVIEW 텍스트 입력시 처리하기
        /// </summary>
        /// <param name="e">이벤트 인자</param>
        protected override void OnPreviewTextInput(TextCompositionEventArgs e)
        {
            #region CTRL + O 키를 누른 경우 처리한다.

            if(e.ControlText.Length > 0 && e.ControlText[0] == '\x0F')
            {
                OpenFileDialog openFileDialog = new OpenFileDialog();

                openFileDialog.CheckFileExists = true;
                openFileDialog.Filter          = filter;

                if((bool)openFileDialog.ShowDialog(this))
                {
                    FlowDocument flowDocument = richTextBox.Document;

                    TextRange textRange = new TextRange(flowDocument.ContentStart, flowDocument.ContentEnd);

                    Stream stream = null;

                    try
                    {
                        stream = new FileStream(openFileDialog.FileName, FileMode.Open);

                        textRange.Load(stream, DataFormats.Xaml);
                    }
                    catch(Exception exception)
                    {
                        MessageBox.Show(exception.Message, Title);
                    }
                    finally
                    {
                        if(stream != null)
                        {
                            stream.Close();
                        }
                    }
                }

                e.Handled = true;
            }

            #endregion
            #region CTRL + S 키를 누른 경우 처리한다.

            if(e.ControlText.Length > 0 && e.ControlText[0] == '\x13')
            {
                SaveFileDialog saveFileDialog = new SaveFileDialog();

                saveFileDialog.Filter = filter;

                if((bool)saveFileDialog.ShowDialog(this))
                {
                    FlowDocument flowDocument = richTextBox.Document;

                    TextRange textRange = new TextRange(flowDocument.ContentStart, flowDocument.ContentEnd);

                    Stream stream = null;

                    try
                    {
                        stream = new FileStream(saveFileDialog.FileName, FileMode.Create);

                        textRange.Save(stream, DataFormats.Xaml);
                    }
                    catch(Exception exception)
                    {
                        MessageBox.Show(exception.Message, Title);
                    }
                    finally
                    {
                        if(stream != null)
                        {
                            stream.Close();
                        }
                    }
                }

                e.Handled = true;
            }

            #endregion

            base.OnPreviewTextInput(e);
        }

        #endregion
    }
}