[C#/WPF] 객체 동적 바인딩 처리하기

▶ 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-namspace:TestProject"
    Width="600"
    Height="450"
    Title="객체 동적 바인딩 처리하기">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="*"    />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <Border
            Margin="5"
            BorderThickness="1"
            BorderBrush="Black">
            <ListBox Name="listBox" Grid.Row="0" />
        </Border>
        <StackPanel Grid.Row="1" Orientation="Horizontal">
            <Button Name="schoolButton"      Margin="5" Width="85" Content="School"       />
            <Button Name="studentButton"     Margin="5" Width="85" Content="Student"      />
            <Button Name="currentItemButton" Margin="5" Width="85" Content="Current Item" />
        </StackPanel>
    </Grid>
</Window>

 

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▶ MainWindow.xaml.cs

using System;
using System.ComponentModel;
using System.Collections.ObjectModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;

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

        #region Field

        /// <summary>
        /// 속성 설명자 컬렉션
        /// </summary>
        private PropertyDescriptorCollection propertyDescriptorCollection = null;

        /// <summary>
        /// 체크 여부 속성 설명자
        /// </summary>
        private PropertyDescriptor isCheckedPropertyDescriptor = null;

        /// <summary>
        /// 텍스트 속성 설명자
        /// </summary>
        private PropertyDescriptor textPropertyDescriptor = null;

        #endregion

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

        #region 생성자 - MainWindow()

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

            this.schoolButton.Click      += schoolButton_Click;
            this.studentButton.Click     += studentButton_Click;
            this.currentItemButton.Click += currentItemButton_Click;
        }

        #endregion

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

        #region School 버튼 클릭시 처리하기 - schoolButton_Click(sender, e)

        /// <summary>
        /// School 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void schoolButton_Click(object sender, RoutedEventArgs e)
        {
            ObservableCollection<School> collection = School.GetCollection();

            this.listBox.ItemsSource = collection;

            this.propertyDescriptorCollection = TypeDescriptor.GetProperties(collection[0]);
            this.isCheckedPropertyDescriptor  = this.propertyDescriptorCollection["IsChecked"];
            this.textPropertyDescriptor       = this.propertyDescriptorCollection["SchoolName"];

            this.listBox.ItemTemplate = GetDataTemplate(typeof(School), "IsChecked", "SchoolName");
        }

        #endregion

        #region Student 버튼 클릭시 처리하기 - studentButton_Click(sender, e)

        /// <summary>
        /// Student 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void studentButton_Click(object sender, RoutedEventArgs e)
        {
            ObservableCollection<Student> collection = Student.GetCollection();

            this.listBox.ItemsSource = collection;

            this.propertyDescriptorCollection = TypeDescriptor.GetProperties(collection[0]);
            this.isCheckedPropertyDescriptor  = this.propertyDescriptorCollection["IsChecked"];
            this.textPropertyDescriptor       = this.propertyDescriptorCollection["StudentName"];

            this.listBox.ItemTemplate = GetDataTemplate(typeof(School), "IsChecked", "StudentName");
        }

        #endregion

        #region Current Item 버튼 클릭시 처리하기 - currentItemButton_Click(sender, e)

        /// <summary>
        /// Current Item 버튼 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void currentItemButton_Click(object sender, RoutedEventArgs e)
        {
            object item = this.listBox.SelectedItem;

            if(item != null)
            {
                bool   isChecked = (bool)this.isCheckedPropertyDescriptor.GetValue(item);
                string text      = (string)this.textPropertyDescriptor.GetValue(item);

                MessageBox.Show(string.Format("{0}, {1}", isChecked, text));
            }
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////// Function

        #region 데이터 템플리트 구하기 - GetDataTemplate(itemType, isCheckedPropertyName, textPropertyName)

        /// <summary>
        /// 데이터 템플리트 구하기
        /// </summary>
        /// <param name="itemType">항목 타입</param>
        /// <param name="isCheckedPropertyName">체크 여부 속성명</param>
        /// <param name="textPropertyName">텍스트 속성명</param>
        /// <returns>데이터 템플리트</returns>
        private DataTemplate GetDataTemplate(Type itemType, string isCheckedPropertyName, string textPropertyName)
        {
            DataTemplate dataTemplate = new DataTemplate();

            dataTemplate.DataType = itemType;

            FrameworkElementFactory stackPanelFrameworkElementFactory = new FrameworkElementFactory(typeof(StackPanel));

            stackPanelFrameworkElementFactory.SetValue(StackPanel.OrientationProperty, Orientation.Horizontal);

            FrameworkElementFactory checkBoxFrameworkElementFactory = new FrameworkElementFactory(typeof(CheckBox));

            checkBoxFrameworkElementFactory.SetValue(CheckBox.WidthProperty            , 20d                     );
            checkBoxFrameworkElementFactory.SetValue(CheckBox.VerticalAlignmentProperty, VerticalAlignment.Center);

            checkBoxFrameworkElementFactory.SetBinding(CheckBox.IsCheckedProperty, new Binding(isCheckedPropertyName));

            stackPanelFrameworkElementFactory.AppendChild(checkBoxFrameworkElementFactory);

            FrameworkElementFactory textBlockFrameworkElementFactory = new FrameworkElementFactory(typeof(TextBlock));

            textBlockFrameworkElementFactory.SetBinding(TextBlock.TextProperty, new Binding(textPropertyName));

            stackPanelFrameworkElementFactory.AppendChild(textBlockFrameworkElementFactory);

            dataTemplate.VisualTree = stackPanelFrameworkElementFactory;

            return dataTemplate;
        }

        #endregion
    }
}

 

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▶ School.cs

using System.Collections.ObjectModel;

namespace TestProject
{
    /// <summary>
    /// 학교
    /// </summary>
    public class School
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Property
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 체크 여부 - IsChecked

        /// <summary>
        /// 체크 여부
        /// </summary>
        public bool IsChecked { get; set; }

        #endregion

        #region 학교 ID - SchoolID

        /// <summary>
        /// 학교 ID
        /// </summary>
        public string SchoolID { get; set; }

        #endregion

        #region 학교명 - SchoolName

        /// <summary>
        /// 학교명
        /// </summary>
        public string SchoolName { get; set; }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 컬렉션 구하기 - GetCollection()

        /// <summary>
        /// 컬렉션 구하기
        /// </summary>
        /// <returns>컬렉션</returns>
        public static ObservableCollection<School> GetCollection()
        {
            ObservableCollection<School> collection = new ObservableCollection<School>();

            collection.Add(new School() { SchoolID = "0001", SchoolName = "학교1" });
            collection.Add(new School() { SchoolID = "0002", SchoolName = "학교2" });
            collection.Add(new School() { SchoolID = "0003", SchoolName = "학교3" });

            return collection;
        }

        #endregion
    }
}

 

▶ Student.cs

using System.Collections.ObjectModel;

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

        #region 체크 여부 - IsChecked

        /// <summary>
        /// 체크 여부
        /// </summary>
        public bool IsChecked { get; set; }

        #endregion

        #region 학생 ID - StudentID

        /// <summary>
        /// 학생 ID
        /// </summary>
        public string StudentID { get; set; }

        #endregion

        #region 학생명 - StudentName

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

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 컬렉션 구하기 - GetCollection()

        /// <summary>
        /// 컬렉션 구하기
        /// </summary>
        /// <returns>컬렉션</returns>
        public static ObservableCollection<Student> GetCollection()
        {
            ObservableCollection<Student> collection = new ObservableCollection<Student>();

            collection.Add(new Student() { StudentID = "0001", StudentName = "학생1" });
            collection.Add(new Student() { StudentID = "0002", StudentName = "학생2" });
            collection.Add(new Student() { StudentID = "0003", StudentName = "학생3" });

            return collection;
        }

        #endregion
    }
}