From 88bea39b8a5dd3e42bb34a533c6e99593dd8622b Mon Sep 17 00:00:00 2001
From: syneffort <syneffort@gmail.com>
Date: Thu, 6 Jul 2023 16:39:01 +0900
Subject: [PATCH] dependency property

---
 .../DependencyPropertySample2/App.xaml        |  9 ++
 .../DependencyPropertySample2/App.xaml.cs     | 17 ++++
 .../DependencyPropertySample2/AssemblyInfo.cs | 10 +++
 .../DependencyPropertySample2.csproj          | 10 +++
 .../DependencyPropertySample2/MainWindow.xaml | 20 +++++
 .../MainWindow.xaml.cs                        | 62 +++++++++++++
 .../ListBoxLinqBindingSample/App.xaml         |  9 ++
 .../ListBoxLinqBindingSample/App.xaml.cs      | 17 ++++
 .../ListBoxLinqBindingSample/AssemblyInfo.cs  | 10 +++
 .../ListBoxLinqBindingSample.csproj           | 10 +++
 .../ListBoxLinqBindingSample/MainWindow.xaml  | 61 +++++++++++++
 .../MainWindow.xaml.cs                        | 90 +++++++++++++++++++
 .../ListBoxLinqBindingSample/Model/Duty.cs    | 31 +++++++
 .../SubWindow/SubWindow.xaml                  | 38 ++++++++
 .../SubWindow/SubWindow.xaml.cs               | 43 +++++++++
 .../ViewModel/Duties.cs                       | 23 +++++
 PacticeSolution/PacticeSolution.sln           | 14 ++-
 17 files changed, 473 insertions(+), 1 deletion(-)
 create mode 100644 PacticeSolution/DependencyPropertySample2/App.xaml
 create mode 100644 PacticeSolution/DependencyPropertySample2/App.xaml.cs
 create mode 100644 PacticeSolution/DependencyPropertySample2/AssemblyInfo.cs
 create mode 100644 PacticeSolution/DependencyPropertySample2/DependencyPropertySample2.csproj
 create mode 100644 PacticeSolution/DependencyPropertySample2/MainWindow.xaml
 create mode 100644 PacticeSolution/DependencyPropertySample2/MainWindow.xaml.cs
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/App.xaml
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/App.xaml.cs
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/AssemblyInfo.cs
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/ListBoxLinqBindingSample.csproj
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/MainWindow.xaml
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/MainWindow.xaml.cs
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/Model/Duty.cs
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/SubWindow/SubWindow.xaml
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/SubWindow/SubWindow.xaml.cs
 create mode 100644 PacticeSolution/ListBoxLinqBindingSample/ViewModel/Duties.cs

diff --git a/PacticeSolution/DependencyPropertySample2/App.xaml b/PacticeSolution/DependencyPropertySample2/App.xaml
new file mode 100644
index 0000000..b4e1438
--- /dev/null
+++ b/PacticeSolution/DependencyPropertySample2/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="DependencyPropertySample2.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:DependencyPropertySample2"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
diff --git a/PacticeSolution/DependencyPropertySample2/App.xaml.cs b/PacticeSolution/DependencyPropertySample2/App.xaml.cs
new file mode 100644
index 0000000..9471485
--- /dev/null
+++ b/PacticeSolution/DependencyPropertySample2/App.xaml.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace DependencyPropertySample2
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}
diff --git a/PacticeSolution/DependencyPropertySample2/AssemblyInfo.cs b/PacticeSolution/DependencyPropertySample2/AssemblyInfo.cs
new file mode 100644
index 0000000..8b5504e
--- /dev/null
+++ b/PacticeSolution/DependencyPropertySample2/AssemblyInfo.cs
@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]
diff --git a/PacticeSolution/DependencyPropertySample2/DependencyPropertySample2.csproj b/PacticeSolution/DependencyPropertySample2/DependencyPropertySample2.csproj
new file mode 100644
index 0000000..4106cb0
--- /dev/null
+++ b/PacticeSolution/DependencyPropertySample2/DependencyPropertySample2.csproj
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+</Project>
diff --git a/PacticeSolution/DependencyPropertySample2/MainWindow.xaml b/PacticeSolution/DependencyPropertySample2/MainWindow.xaml
new file mode 100644
index 0000000..3f11ef7
--- /dev/null
+++ b/PacticeSolution/DependencyPropertySample2/MainWindow.xaml
@@ -0,0 +1,20 @@
+<Window x:Class="DependencyPropertySample2.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:DependencyPropertySample2"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="300" Width="300">
+    <Window.ContextMenu>
+        <ContextMenu MenuItem.Click="ContextMenu_Click">
+            <MenuItem Header="YELLOW"/>
+            <MenuItem Header="GREEN"/>
+            <MenuItem Header="BLUE"/>
+        </ContextMenu>
+    </Window.ContextMenu>
+
+    <Grid>
+        <TextBox x:Name="tbMain" Width="100" Height="20"/>
+    </Grid>
+</Window>
diff --git a/PacticeSolution/DependencyPropertySample2/MainWindow.xaml.cs b/PacticeSolution/DependencyPropertySample2/MainWindow.xaml.cs
new file mode 100644
index 0000000..13ea37b
--- /dev/null
+++ b/PacticeSolution/DependencyPropertySample2/MainWindow.xaml.cs
@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace DependencyPropertySample2
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        // dependency property
+        public static readonly DependencyProperty MyProperty = DependencyProperty.Register
+            ("MyColor", typeof(string), typeof(MainWindow), new FrameworkPropertyMetadata(new PropertyChangedCallback(OnMyPropertyChanged)));
+
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+
+        public string MyColor
+        {
+            get { return (string)GetValue(MyProperty); }
+            set { SetValue(MyProperty, value); }
+        }
+
+        private static void OnMyPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            MainWindow win = d as MainWindow;
+            if (win == null)
+                return;
+
+            SolidColorBrush brush = new BrushConverter().ConvertFromString(e.NewValue.ToString()) as SolidColorBrush;
+            if (brush == null)
+                return;
+
+            win.Background = brush;
+            win.Title = (e.OldValue == null) ? "Previous: None" : $"Previous: {e.OldValue.ToString()}";
+            win.tbMain.Text = e.NewValue.ToString();
+        }
+
+        private void ContextMenu_Click(object sender, RoutedEventArgs e)
+        {
+            string str = (e.Source as MenuItem).Header as string;
+            if (string.IsNullOrEmpty(str))
+                return;
+
+            this.MyColor = str;
+        }
+    }
+}
diff --git a/PacticeSolution/ListBoxLinqBindingSample/App.xaml b/PacticeSolution/ListBoxLinqBindingSample/App.xaml
new file mode 100644
index 0000000..5ca1339
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="ListBoxLinqBindingSample.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:ListBoxLinqBindingSample"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
diff --git a/PacticeSolution/ListBoxLinqBindingSample/App.xaml.cs b/PacticeSolution/ListBoxLinqBindingSample/App.xaml.cs
new file mode 100644
index 0000000..769bf9c
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/App.xaml.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace ListBoxLinqBindingSample
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}
diff --git a/PacticeSolution/ListBoxLinqBindingSample/AssemblyInfo.cs b/PacticeSolution/ListBoxLinqBindingSample/AssemblyInfo.cs
new file mode 100644
index 0000000..8b5504e
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/AssemblyInfo.cs
@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]
diff --git a/PacticeSolution/ListBoxLinqBindingSample/ListBoxLinqBindingSample.csproj b/PacticeSolution/ListBoxLinqBindingSample/ListBoxLinqBindingSample.csproj
new file mode 100644
index 0000000..4106cb0
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/ListBoxLinqBindingSample.csproj
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+</Project>
diff --git a/PacticeSolution/ListBoxLinqBindingSample/MainWindow.xaml b/PacticeSolution/ListBoxLinqBindingSample/MainWindow.xaml
new file mode 100644
index 0000000..9bef5c6
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/MainWindow.xaml
@@ -0,0 +1,61 @@
+<Window x:Class="ListBoxLinqBindingSample.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:ListBoxLinqBindingSample"
+        xmlns:viewModel="clr-namespace:ListBoxLinqBindingSample.ViewModel"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="400" Width="450">
+    <Window.Resources>
+        <viewModel:Duties x:Key="duties"/>
+        <DataTemplate x:Key="myTemplate">
+            <Border x:Name="boarder">
+                <Grid>
+                    <Grid.RowDefinitions>
+                        <RowDefinition/>
+                        <RowDefinition/>
+                        <RowDefinition/>
+                    </Grid.RowDefinitions>
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition/>
+                        <ColumnDefinition/>
+                    </Grid.ColumnDefinitions>
+
+                    <TextBlock Grid.Column="0" Grid.Row="0" Text="Duty name: "/>
+                    <TextBlock Grid.Column="1" Grid.Row="0" Text="{Binding Name}"/>
+                    <TextBlock Grid.Column="0" Grid.Row="1" Text="Duty type: "/>
+                    <TextBlock Grid.Column="1" Grid.Row="1" Text="{Binding DutyType}"/>
+                    <Separator Grid.Column="0" Grid.Row="2" Grid.ColumnSpan="2"/>
+                </Grid>
+            </Border>
+        </DataTemplate>
+        <LinearGradientBrush x:Key="myGradientBrush" StartPoint="0,0" EndPoint="1,1">
+            <GradientStop Color="DarkSeaGreen" Offset="0"/>
+            <GradientStop Color="LawnGreen" Offset="0.5"/>
+            <GradientStop Color="DarkSeaGreen" Offset="1"/>
+        </LinearGradientBrush>
+        <Style TargetType="Button">
+            <Setter Property="Background" Value="{StaticResource myGradientBrush}"/>
+            <Setter Property="Width" Value="80"/>
+            <Setter Property="Margin" Value="5"/>
+        </Style>
+    </Window.Resources>
+
+    <StackPanel Margin="10">
+        <Button x:Name="btnAdd" Content="Duty registration" Width="200"
+                Click="btnAdd_Click"/>
+        <TextBlock Text="Select duty type"/>
+        <ListBox x:Name="lstType"
+                 SelectedIndex="0"
+                 SelectionChanged="lstType_SelectionChanged">
+            <ListBoxItem Content="Inside"/>
+            <ListBoxItem Content="Outside"/>
+        </ListBox>
+        <TextBlock Margin="10 10 0 10" Text="Duty"/>
+        <ListBox x:Name="lstMain" Width="400" Margin="10" HorizontalContentAlignment="Stretch"
+                 ItemTemplate="{StaticResource myTemplate}"
+                 ItemsSource="{Binding}"
+                 SelectionChanged="lstMain_SelectionChanged"/>
+    </StackPanel>
+</Window>
diff --git a/PacticeSolution/ListBoxLinqBindingSample/MainWindow.xaml.cs b/PacticeSolution/ListBoxLinqBindingSample/MainWindow.xaml.cs
new file mode 100644
index 0000000..58eacd6
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/MainWindow.xaml.cs
@@ -0,0 +1,90 @@
+using ListBoxLinqBindingSample.Model;
+using ListBoxLinqBindingSample.SubWindow;
+using ListBoxLinqBindingSample.ViewModel;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace ListBoxLinqBindingSample
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        private static Duties _duties = new Duties();
+
+        public delegate void RefreshList(DutyType dutyType);
+        public event RefreshList RefreshListEvent;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+
+        internal static Duties Duties
+        {
+            get { return _duties; }
+            set { _duties = value; }
+        }
+
+        private void RefreshListBox(DutyType dutyType)
+        {
+            lstType.SelectedItem = null;
+            lstType.SelectedIndex = dutyType == DutyType.Inside ? 0 : 1;
+        }
+
+        private void btnAdd_Click(object sender, RoutedEventArgs e)
+        {
+            SubWindow.SubWindow subWindow = new SubWindow.SubWindow();
+
+            this.RefreshListEvent += new RefreshList(RefreshListBox);
+            subWindow.UpdateActor = this.RefreshListEvent;
+            subWindow.Show();
+        }
+
+        private void lstType_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            ListBox lb = sender as ListBox;
+            if (lb == null)
+                return;
+
+            if (lb.SelectedItem == null)
+                return;
+
+            ListBoxItem item = lb.SelectedItem as ListBoxItem;
+            string dutyType = item.Content.ToString();
+
+            this.DataContext = from duty in _duties
+                               where duty.DutyType.ToString() == dutyType
+                               select duty;
+        }
+
+        private void lstMain_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            ListBox lb = sender as ListBox;
+            if (lb == null)
+                return;
+
+            if (lb.SelectedItem == null)
+                return;
+
+            Duty duty = lb.SelectedItem as Duty;
+            if (duty == null) 
+                return;
+
+            MessageBox.Show($"{duty.Name} :: {duty.DutyType}", "Selected duty");
+        }
+    }
+}
diff --git a/PacticeSolution/ListBoxLinqBindingSample/Model/Duty.cs b/PacticeSolution/ListBoxLinqBindingSample/Model/Duty.cs
new file mode 100644
index 0000000..1ea585c
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/Model/Duty.cs
@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ListBoxLinqBindingSample.Model
+{
+    public enum DutyType
+    {
+        Inside,
+        Outside
+    }
+
+    internal class Duty
+    {
+        public string Name { get; set; }
+        public DutyType DutyType { get; set; }
+
+        public Duty(string name, DutyType dutyType)
+        {
+            this.Name = name;
+            this.DutyType = dutyType;
+        }
+
+        public Duty()
+        {
+            
+        }
+    }
+}
diff --git a/PacticeSolution/ListBoxLinqBindingSample/SubWindow/SubWindow.xaml b/PacticeSolution/ListBoxLinqBindingSample/SubWindow/SubWindow.xaml
new file mode 100644
index 0000000..e75bbf7
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/SubWindow/SubWindow.xaml
@@ -0,0 +1,38 @@
+<Window x:Class="ListBoxLinqBindingSample.SubWindow.SubWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        xmlns:local="clr-namespace:ListBoxLinqBindingSample.SubWindow"
+        mc:Ignorable="d"
+        Title="SubWindow" Height="300" Width="300">
+    <Grid Margin="10">
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition/>
+            <ColumnDefinition/>
+            <ColumnDefinition/>
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="80"/>
+        </Grid.RowDefinitions>
+
+        <TextBlock Grid.ColumnSpan="3" HorizontalAlignment="Center" VerticalAlignment="Center"
+                   FontSize="20" FontWeight="Bold"
+                   Text="Position Registration"/>
+        <TextBlock Grid.Row="1" Margin="10" VerticalAlignment="Center"
+                   Text="Duty name: "/>
+        <TextBox x:Name="tbxDutyName" Grid.Column="1" Grid.Row="1" Margin="5" Grid.ColumnSpan="2" VerticalAlignment="Center"/>
+        <TextBlock Grid.Row="2" Margin="10" VerticalAlignment="Center"
+                   Text="Duty type: "/>
+        <RadioButton x:Name="rbInside" Grid.Column="1" Grid.Row="2" VerticalAlignment="Center" HorizontalAlignment="Center"
+                     Content="Inside"/>
+        <RadioButton x:Name="rbOutside" Grid.Column="2" Grid.Row="2" VerticalAlignment="Center" HorizontalAlignment="Center"
+                     Content="Outside"/>
+        <Button x:Name="btnSave" Grid.Column="1" Grid.Row="3" Height="22" Width="80" VerticalAlignment="Center" HorizontalAlignment="Center"
+                Content="Save"
+                Click="btnSave_Click"/>
+    </Grid>
+</Window>
diff --git a/PacticeSolution/ListBoxLinqBindingSample/SubWindow/SubWindow.xaml.cs b/PacticeSolution/ListBoxLinqBindingSample/SubWindow/SubWindow.xaml.cs
new file mode 100644
index 0000000..6797316
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/SubWindow/SubWindow.xaml.cs
@@ -0,0 +1,43 @@
+using ListBoxLinqBindingSample.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+
+namespace ListBoxLinqBindingSample.SubWindow
+{
+    /// <summary>
+    /// SubWindow.xaml에 대한 상호 작용 논리
+    /// </summary>
+    public partial class SubWindow : Window
+    {
+        public Delegate UpdateActor;
+
+        public SubWindow()
+        {
+            InitializeComponent();
+        }
+
+        private void btnSave_Click(object sender, RoutedEventArgs e)
+        {
+            if (rbInside.IsChecked == false && rbOutside.IsChecked == false)
+            {
+                MessageBox.Show("Please select duty type.");
+                return;
+            }
+
+            DutyType dutyType = rbInside.IsChecked == true ? DutyType.Inside : DutyType.Outside;
+            MainWindow.Duties.Add(new Duty(tbxDutyName.Text, dutyType));
+            UpdateActor.DynamicInvoke(dutyType);
+        }
+    }
+}
diff --git a/PacticeSolution/ListBoxLinqBindingSample/ViewModel/Duties.cs b/PacticeSolution/ListBoxLinqBindingSample/ViewModel/Duties.cs
new file mode 100644
index 0000000..e19e969
--- /dev/null
+++ b/PacticeSolution/ListBoxLinqBindingSample/ViewModel/Duties.cs
@@ -0,0 +1,23 @@
+using ListBoxLinqBindingSample.Model;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ListBoxLinqBindingSample.ViewModel
+{
+    internal class Duties : ObservableCollection<Duty>
+    {
+        public Duties()
+        {
+            this.Add(new Duty("SALES", DutyType.Outside));
+            this.Add(new Duty("LOGISTICS", DutyType.Outside));
+            this.Add(new Duty("IT", DutyType.Inside));
+            this.Add(new Duty("MARKETING", DutyType.Inside));
+            this.Add(new Duty("HR", DutyType.Inside));
+            this.Add(new Duty("FEILD", DutyType.Outside));
+        }
+    }
+}
diff --git a/PacticeSolution/PacticeSolution.sln b/PacticeSolution/PacticeSolution.sln
index 4baa907..d49e36f 100644
--- a/PacticeSolution/PacticeSolution.sln
+++ b/PacticeSolution/PacticeSolution.sln
@@ -59,7 +59,11 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ListSample", "ListSample\Li
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PropertyTriggerSample", "PropertyTriggerSample\PropertyTriggerSample.csproj", "{480DC5E9-1E18-4176-B964-FD2024C5F1C1}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DataTriggerSample", "DataTriggerSample\DataTriggerSample.csproj", "{2184CBCF-A59E-4C6F-9BBF-1DC20F132B50}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DataTriggerSample", "DataTriggerSample\DataTriggerSample.csproj", "{2184CBCF-A59E-4C6F-9BBF-1DC20F132B50}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ListBoxLinqBindingSample", "ListBoxLinqBindingSample\ListBoxLinqBindingSample.csproj", "{DE5F5671-AB82-4F9E-879A-6FF1FFC49D26}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DependencyPropertySample2", "DependencyPropertySample2\DependencyPropertySample2.csproj", "{AC4DAD4D-BBAB-4E0B-9BB6-5124592BA365}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -183,6 +187,14 @@ Global
 		{2184CBCF-A59E-4C6F-9BBF-1DC20F132B50}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2184CBCF-A59E-4C6F-9BBF-1DC20F132B50}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{2184CBCF-A59E-4C6F-9BBF-1DC20F132B50}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DE5F5671-AB82-4F9E-879A-6FF1FFC49D26}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DE5F5671-AB82-4F9E-879A-6FF1FFC49D26}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DE5F5671-AB82-4F9E-879A-6FF1FFC49D26}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DE5F5671-AB82-4F9E-879A-6FF1FFC49D26}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AC4DAD4D-BBAB-4E0B-9BB6-5124592BA365}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AC4DAD4D-BBAB-4E0B-9BB6-5124592BA365}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AC4DAD4D-BBAB-4E0B-9BB6-5124592BA365}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AC4DAD4D-BBAB-4E0B-9BB6-5124592BA365}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE