[C#/WPF] RichTextBox 클래스 : SelectionChanged 이벤트를 사용해 선택 영역 서식 설정하기

■ RichTextBox 클래스의 SelectionChanged 이벤트를 사용해 선택 영역 서식을 설정하는 방법을 보여준다.

▶ MainWindow.xaml


<Window x:Class="TestProject.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Height="600"
    Title="RichTextBox 클래스 : SelectionChanged 이벤트를 사용해 선택 영역 서식 설정하기"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Grid>
        <RichTextBox Name="richTextBox"
            Margin="10"
            Padding="10">
            <FlowDocument>
                <Paragraph>
                    <Run>Here is some RichTextBox text. Select some of it and click the button below.</Run>
                </Paragraph>
            </FlowDocument>
        </RichTextBox>
    </Grid>
</Window>

<Window x:Class="TestProject.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

Width="800"

Height="600"

Title="RichTextBox 클래스 : SelectionChanged 이벤트를 사용해 선택 영역 서식 설정하기"

FontFamily="나눔고딕코딩"

FontSize="16">

<Grid>

<RichTextBox Name="richTextBox"

Margin="10"

Padding="10">

<Run>Here is some RichTextBox text. Select some of it and click the button below.</Run>

</Paragraph>

</FlowDocument>

</RichTextBox>

</Grid>

</Window>

▶ MainWindow.xaml.cs


using System.Windows;
using System.Windows.Documents;
using System.Windows.Media;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public partial class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainWindow()

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

            this.richTextBox.SelectionChanged += richTextBox_SelectionChanged;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region 리치 텍스트 박스 선택 변경시 처리하기 - richTextBox_SelectionChanged(sender, e)

        /// <summary>
        /// 리치 텍스트 박스 선택 변경시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void richTextBox_SelectionChanged(object sender, RoutedEventArgs e)
        {
            TextSelection textSelection = this.richTextBox.Selection;

            textSelection.ApplyPropertyValue(TextElement.BackgroundProperty, Brushes.Yellow);
        }

        #endregion
    }
}

using System.Windows;

using System.Windows.Documents;

using System.Windows.Media;

namespace TestProject

{

/// <summary>

/// 메인 윈도우

/// </summary>

public partial class MainWindow : Window

{

//////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

////////////////////////////////////////////////////////////////////////////////////////// Public

#region 생성자 - MainWindow()

/// <summary>

/// 생성자

/// </summary>

public MainWindow()

{

InitializeComponent();

this.richTextBox.SelectionChanged += richTextBox_SelectionChanged;

}

#endregion

//////////////////////////////////////////////////////////////////////////////////////////////////// Method

////////////////////////////////////////////////////////////////////////////////////////// Private

#region 리치 텍스트 박스 선택 변경시 처리하기 - richTextBox_SelectionChanged(sender, e)

/// <summary>

/// 리치 텍스트 박스 선택 변경시 처리하기

/// </summary>

/// <param name="sender">이벤트 발생자</param>

/// <param name="e">이벤트 인자</param>

private void richTextBox_SelectionChanged(object sender, RoutedEventArgs e)

{

TextSelection textSelection = this.richTextBox.Selection;

textSelection.ApplyPropertyValue(TextElement.BackgroundProperty, Brushes.Yellow);

}

#endregion

}

TestProject.zip