첨부 소스 코드는 나눔고딕코딩 폰트를 사용합니다.
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TestProject.zip
다운로드

▶ Student.cs

namespace TestProject
{
    /// <summary>
    /// 학생
    /// </summary>
    public class Student 
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Property
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 학생명 - StudentName

        /// <summary>
        /// 학생명
        /// </summary>
        public string StudentName { get; set; }

        #endregion
        #region 등록 여부 - IsEnrolled

        /// <summary>
        /// 등록 여부
        /// </summary>
        public bool IsEnrolled { get; set; }

        #endregion

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

        #region 생성자 - Student()

        /// <summary>
        /// 생성자
        /// </summary>
        public Student()
        {
        }

        #endregion
    }
}

 

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▶ StudentCollection.cs

using System.Collections.ObjectModel;

namespace TestProject
{
    /// <summary>
    /// 학생 리스트
    /// </summary>
    public class StudentCollection : ObservableCollection<Student>
    {
    }
}

 

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▶ BoolToBrushValueConverter.cs

using System;
using System.Globalization;
using System.Windows.Data;
using System.Windows.Media;

namespace TestProject
{
    [ValueConversion(typeof(bool), typeof(Brush))]
    public class BoolToBrushValueConverter : IValueConverter
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 변환하기 - Convert(value, targetType, parameter, cultureInfo)

        /// <summary>
        /// 변환하기
        /// </summary>
        /// <param name="value">값</param>
        /// <param name="targetType">타겟 타입</param>
        /// <param name="parameter">매개 변수</param>
        /// <param name="cultureInfo">문화 정보</param>
        /// <returns>변환 값</returns>
        public object Convert(object value, Type targetType, object parameter, CultureInfo cultureInfo)
        {
            Brush brush = null;

            if(value != null && value.GetType() == typeof(bool))
            {
                brush = (bool)value ? Brushes.Blue : Brushes.Red;
            }

            return brush;
        }

        #endregion
        #region 역변환하기 - ConvertBack(value, targetType, parameter, cultureInfo)

        /// <summary>
        /// 역변환하기
        /// </summary>
        /// <param name="value">값</param>
        /// <param name="targetType">타겟 타입</param>
        /// <param name="parameter">매개 변수</param>
        /// <param name="cultureInfo">문화 정보</param>
        /// <returns>역변환 값</returns>
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo cultureInfo)
        {
            return null;
        }

        #endregion
    }
}

 

▶ 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"
    xmlns:local="clr-namespace:TestProject"
    Width="600"
    Height="450"
    Title="ObservableCollection&lt;T&gt; 클래스 : 바인딩 설정하기"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Window.Resources>
        <local:StudentCollection x:Key="StudentCollectionKey">
            <local:Student StudentName="홍길동" IsEnrolled="false" />
            <local:Student StudentName="김철수" IsEnrolled="true"  />
            <local:Student StudentName="이영희" IsEnrolled="false" />
            <local:Student StudentName="정순자" IsEnrolled="true"  />
            <local:Student StudentName="방영수" IsEnrolled="true"  />
        </local:StudentCollection>
        <local:BoolToBrushValueConverter x:Key="BoolToBrushValueConverterKey" />
        <DataTemplate x:Key="ListBoxItemDataTemplateKey">
            <StackPanel
                Margin="10"
                Orientation="Horizontal">
                <Rectangle
                    Margin="0 0 5 0"
                    Height="10" 
                    Width="10" 
                    Fill="{Binding Path=IsEnrolled, Converter={StaticResource BoolToBrushValueConverterKey}}" />
                <TextBlock Text="{Binding Path=StudentName}" />
            </StackPanel>
        </DataTemplate>
    </Window.Resources>
    <Grid>
        <ListBox
            Margin="10 10 10 10"
            ItemsSource="{StaticResource StudentCollectionKey}"
            ItemTemplate="{StaticResource ListBoxItemDataTemplateKey}" />
    </Grid>
</Window>
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