C# and WPF tutorial files

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
+    </startup>
+</configuration>

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/App.xaml

@@ -0,0 +1,9 @@
+<Application x:Class="WpfTreeView.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:WpfTreeView"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/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 WpfTreeView
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Directory/Data/DirectoryItem.cs

@@ -0,0 +1,23 @@
+namespace WpfTreeView
+{
+    /// <summary>
+    /// Information about a directory item such as a drive, a file or a folder
+    /// </summary>
+    public class DirectoryItem
+    {
+        /// <summary>
+        /// The type of this item
+        /// </summary>
+        public DirectoryItemType Type { get; set; }
+
+        /// <summary>
+        /// The absolute path to this item
+        /// </summary>
+        public string FullPath { get; set; }
+
+        /// <summary>
+        /// The name of this directory item
+        /// </summary>
+        public string Name { get { return this.Type == DirectoryItemType.Drive ? this.FullPath : DirectoryStructure.GetFileFolderName(this.FullPath); } }
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Directory/Data/DirectoryItemType.cs

@@ -0,0 +1,21 @@
+namespace WpfTreeView
+{
+    /// <summary>
+    /// The type of a directory item
+    /// </summary>
+    public enum DirectoryItemType
+    {
+        /// <summary>
+        /// A logical drive
+        /// </summary>
+        Drive,
+        /// <summary>
+        /// A phyiscal file
+        /// </summary>
+        File,
+        /// <summary>
+        /// A folder
+        /// </summary>
+        Folder
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Directory/DirectoryStructure.cs

@@ -0,0 +1,94 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace WpfTreeView
+{
+    /// <summary>
+    /// A helper class to query information about directories
+    /// </summary>
+    public static class DirectoryStructure
+    {
+        /// <summary>
+        /// Gets all logical drives on the computer
+        /// </summary>
+        /// <returns></returns>
+        public static List<DirectoryItem> GetLogicalDrives()
+        {
+            // Get every logical drive on the machine
+            return Directory.GetLogicalDrives().Select(drive => new DirectoryItem { FullPath = drive, Type = DirectoryItemType.Drive }).ToList();
+        }
+
+        /// <summary>
+        /// Gets the directories top-level content
+        /// </summary>
+        /// <param name="fullPath">The full path to the directory</param>
+        /// <returns></returns>
+        public static List<DirectoryItem> GetDirectoryContents(string fullPath)
+        {
+            // Create empty list
+            var items = new List<DirectoryItem>();
+
+            #region Get Folders
+            
+            // Try and get directories from the folder
+            // ignoring any issues doing so
+            try
+            {
+                var dirs = Directory.GetDirectories(fullPath);
+
+                if (dirs.Length > 0)
+                    items.AddRange(dirs.Select(dir => new DirectoryItem { FullPath = dir, Type = DirectoryItemType.Folder }));
+            }
+            catch { }
+
+            #endregion
+
+            #region Get Files
+
+            // Try and get files from the folder
+            // ignoring any issues doing so
+            try
+            {
+                var fs = Directory.GetFiles(fullPath);
+
+                if (fs.Length > 0)
+                    items.AddRange(fs.Select(file => new DirectoryItem { FullPath = file, Type = DirectoryItemType.File }));
+            }
+            catch { }
+
+            #endregion
+
+            return items;
+        }
+
+        #region Helpers
+
+        /// <summary>
+        /// Find the file or folder name from a full path
+        /// </summary>
+        /// <param name="path">The full path</param>
+        /// <returns></returns>
+        public static string GetFileFolderName(string path)
+        {
+            // If we have no path, return empty
+            if (string.IsNullOrEmpty(path))
+                return string.Empty;
+
+            // Make all slashes back slashes
+            var normalizedPath = path.Replace('/', '\\');
+
+            // Find the last backslash in the path
+            var lastIndex = normalizedPath.LastIndexOf('\\');
+
+            // If we don't find a backslash, return the path itself
+            if (lastIndex <= 0)
+                return path;
+
+            // Return the name after the last back slash
+            return path.Substring(lastIndex + 1);
+        }
+
+        #endregion
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Directory/ViewModels/Base/BaseViewModel.cs

@@ -0,0 +1,17 @@
+using PropertyChanged;
+using System.ComponentModel;
+
+namespace WpfTreeView
+{
+    /// <summary>
+    /// A base view model that fires Property Changed events as needed
+    /// </summary>
+    [ImplementPropertyChanged]
+    public class BaseViewModel : INotifyPropertyChanged
+    {
+        /// <summary>
+        /// The event that is fired when any child property changes its value
+        /// </summary>
+        public event PropertyChangedEventHandler PropertyChanged = (sender, e) => { };
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Directory/ViewModels/Base/RelayCommand.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Windows.Input;
+
+namespace WpfTreeView
+{
+    /// <summary>
+    /// A basic command that runs an Action
+    /// </summary>
+    public class RelayCommand : ICommand
+    {
+        #region Private Members
+
+        /// <summary>
+        /// The action to run
+        /// </summary>
+        private Action mAction;
+
+        #endregion
+
+        #region Public Events
+
+        /// <summary>
+        /// The event thats fired when the <see cref="CanExecute(object)"/> value has changed
+        /// </summary>
+        public event EventHandler CanExecuteChanged = (sender, e) => { };
+
+        #endregion
+
+        #region Constructor
+
+        /// <summary>
+        /// Default constructor
+        /// </summary>
+        public RelayCommand(Action action)
+        {
+            mAction = action;
+        }
+
+        #endregion
+
+        #region Command Methods
+
+        /// <summary>
+        /// A relay command can always execute
+        /// </summary>
+        /// <param name="parameter"></param>
+        /// <returns></returns>
+        public bool CanExecute(object parameter)
+        {
+            return true;
+        }
+
+        /// <summary>
+        /// Executes the commands Action
+        /// </summary>
+        /// <param name="parameter"></param>
+        public void Execute(object parameter)
+        {
+            mAction();
+        }
+
+        #endregion
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Directory/ViewModels/DirectoryItemViewModel.cs

@@ -0,0 +1,125 @@
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Windows.Input;
+
+namespace WpfTreeView
+{
+    /// <summary>
+    /// A view model for each directory item
+    /// </summary>
+    public class DirectoryItemViewModel : BaseViewModel
+    {
+        #region Public Properties
+
+        /// <summary>
+        /// The type of this item
+        /// </summary>
+        public DirectoryItemType Type { get; set; }
+
+        /// <summary>
+        /// The full path to the item
+        /// </summary>
+        public string FullPath { get; set; }
+
+        /// <summary>
+        /// The name of this directory item
+        /// </summary>
+        public string Name { get { return this.Type == DirectoryItemType.Drive ? this.FullPath : DirectoryStructure.GetFileFolderName(this.FullPath); } }
+
+        /// <summary>
+        /// A list of all children contained inside this item
+        /// </summary>
+        public ObservableCollection<DirectoryItemViewModel> Children { get; set; }
+
+        /// <summary>
+        /// Indicates if this item can be expanded
+        /// </summary>
+        public bool CanExpand { get { return this.Type != DirectoryItemType.File; } }
+
+        /// <summary>
+        /// Indicates if the current item is expanded or not
+        /// </summary>
+        public bool IsExpanded
+        {
+            get
+            {
+                return this.Children?.Count(f => f != null) > 0;
+            }
+            set
+            {
+                // If the UI tells us to expand...
+                if (value == true)
+                    // Find all children
+                    Expand();
+                // If the UI tells us to close
+                else
+                    this.ClearChildren();
+            }
+        }
+
+        #endregion
+
+        #region Public Commands
+
+        /// <summary>
+        /// The command to expand this item
+        /// </summary>
+        public ICommand ExpandCommand { get; set; }
+
+        #endregion
+
+        #region Constructor
+
+        /// <summary>
+        /// Default constructor
+        /// </summary>
+        /// <param name="fullPath">The full path of this item</param>
+        /// <param name="type">The type of item</param>
+        public DirectoryItemViewModel(string fullPath, DirectoryItemType type)
+        {
+            // Create commands
+            this.ExpandCommand = new RelayCommand(Expand);
+
+            // Set path and type
+            this.FullPath = fullPath;
+            this.Type = type;
+
+            // Setup the children as needed
+            this.ClearChildren();
+        }
+
+        #endregion
+
+        #region Helper Methods
+
+        /// <summary>
+        /// Removes all children from the list, adding a dummy item to show the expand icon if required
+        /// </summary>
+        private void ClearChildren()
+        {
+            // Clear items
+            this.Children = new ObservableCollection<DirectoryItemViewModel>();
+
+            // Show the expand arrow if we are not a file
+            if (this.Type != DirectoryItemType.File)
+                this.Children.Add(null);
+        }
+
+        #endregion
+
+        /// <summary>
+        ///  Expands this directory and finds all children
+        /// </summary>
+        private void Expand()
+        {
+            // We cannot expand a file
+            if (this.Type == DirectoryItemType.File)
+                return;
+
+            // Find all children
+            var children = DirectoryStructure.GetDirectoryContents(this.FullPath);
+            this.Children = new ObservableCollection<DirectoryItemViewModel>(
+                                children.Select(content => new DirectoryItemViewModel(content.FullPath, content.Type)));
+        }
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Directory/ViewModels/DirectoryStructureViewModel.cs

@@ -0,0 +1,37 @@
+using System.Collections.ObjectModel;
+using System.Linq;
+
+namespace WpfTreeView
+{
+    /// <summary>
+    /// The view model for the applications main Directory view
+    /// </summary>
+    public class DirectoryStructureViewModel : BaseViewModel
+    {
+        #region Public Properties
+
+        /// <summary>
+        /// A list of all directories on the machine
+        /// </summary>
+        public ObservableCollection<DirectoryItemViewModel> Items { get; set; }
+
+        #endregion
+
+        #region Constructor
+
+        /// <summary>
+        /// Default constructor
+        /// </summary>
+        public DirectoryStructureViewModel()
+        {
+            // Get the logical drives
+            var children = DirectoryStructure.GetLogicalDrives();
+
+            // Create the view models from the data
+            this.Items = new ObservableCollection<DirectoryItemViewModel>(
+                children.Select(drive => new DirectoryItemViewModel(drive.FullPath, DirectoryItemType.Drive)));
+        }
+
+        #endregion
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/FodyWeavers.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Weavers>
+  <PropertyChanged />
+</Weavers>

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/HeaderToImageConverter.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Globalization;
+using System.IO;
+using System.Windows.Data;
+using System.Windows.Media.Imaging;
+
+namespace WpfTreeView
+{
+    /// <summary>
+    /// Converts a full path to a specific image type of a drive, folder or file
+    /// </summary>
+    [ValueConversion(typeof(DirectoryItemType), typeof(BitmapImage))]
+    public class HeaderToImageConverter : IValueConverter
+    {
+        public static HeaderToImageConverter Instance = new HeaderToImageConverter();
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            // By default, we presume an image
+            var image = "Images/file.png";
+
+            switch ((DirectoryItemType)value)
+            {
+                case DirectoryItemType.Drive:
+                    image = "Images/drive.png";
+                    break;
+                case DirectoryItemType.Folder:
+                    image = "Images/folder-closed.png";
+                    break;
+            }
+
+            return new BitmapImage(new Uri($"pack://application:,,,/{image}"));
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/MainWindow.xaml

@@ -0,0 +1,33 @@
+<Window x:Class="WpfTreeView.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:WpfTreeView"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="350" Width="525">
+    <Grid>
+
+        <TreeView x:Name="FolderView" ItemsSource="{Binding Items}">
+
+            <TreeView.ItemContainerStyle>
+                <Style TargetType="{x:Type TreeViewItem}">
+                    <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />
+                </Style>
+            </TreeView.ItemContainerStyle>
+
+            <TreeView.ItemTemplate>
+                <HierarchicalDataTemplate ItemsSource="{Binding Children}">
+                    <StackPanel Orientation="Horizontal">
+                        <Image Width="20" Margin="3" 
+                                    Source="{Binding Type,
+                                        Converter={x:Static local:HeaderToImageConverter.Instance}}" />
+                        <TextBlock VerticalAlignment="Center" Text="{Binding Name}" />
+                    </StackPanel>
+                </HierarchicalDataTemplate>
+            </TreeView.ItemTemplate>
+            
+        </TreeView>
+    </Grid>
+
+</Window>

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/MainWindow.xaml.cs

@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace WpfTreeView
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        #region Constructor
+
+        /// <summary>
+        /// Default constructor
+        /// </summary>
+        public MainWindow()
+        {
+            InitializeComponent();
+
+            this.DataContext = new DirectoryStructureViewModel();
+        }
+
+        #endregion
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Properties/AssemblyInfo.cs

@@ -0,0 +1,55 @@
+using System.Reflection;
+using System.Resources;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Windows;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("WpfTreeView")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("WpfTreeView")]
+[assembly: AssemblyCopyright("Copyright ©  2017")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+//In order to begin building localizable applications, set 
+//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
+//inside a <PropertyGroup>.  For example, if you are using US english
+//in your source files, set the <UICulture> to en-US.  Then uncomment
+//the NeutralResourceLanguage attribute below.  Update the "en-US" in
+//the line below to match the UICulture setting in the project file.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[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)
+)]
+
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Properties/Resources.Designer.cs

@@ -0,0 +1,71 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace WpfTreeView.Properties
+{
+
+
+    /// <summary>
+    ///   A strongly-typed resource class, for looking up localized strings, etc.
+    /// </summary>
+    // This class was auto-generated by the StronglyTypedResourceBuilder
+    // class via a tool like ResGen or Visual Studio.
+    // To add or remove a member, edit your .ResX file then rerun ResGen
+    // with the /str option, or rebuild your VS project.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources
+    {
+
+        private static global::System.Resources.ResourceManager resourceMan;
+
+        private static global::System.Globalization.CultureInfo resourceCulture;
+
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources()
+        {
+        }
+
+        /// <summary>
+        ///   Returns the cached ResourceManager instance used by this class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager
+        {
+            get
+            {
+                if ((resourceMan == null))
+                {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("WpfTreeView.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+
+        /// <summary>
+        ///   Overrides the current thread's CurrentUICulture property for all
+        ///   resource lookups using this strongly typed resource class.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture
+        {
+            get
+            {
+                return resourceCulture;
+            }
+            set
+            {
+                resourceCulture = value;
+            }
+        }
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Properties/Resources.resx

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Properties/Settings.Designer.cs

@@ -0,0 +1,30 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace WpfTreeView.Properties
+{
+
+
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase
+    {
+
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+
+        public static Settings Default
+        {
+            get
+            {
+                return defaultInstance;
+            }
+        }
+    }
+}

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/Properties/Settings.settings

@@ -0,0 +1,7 @@
+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
+  <Profiles>
+    <Profile Name="(Default)" />
+  </Profiles>
+  <Settings />
+</SettingsFile>

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/WpfTreeView.csproj

@@ -0,0 +1,137 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{8A071E7E-F10D-4AB4-B6EF-9069D8D0B2F4}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>WpfTreeView</RootNamespace>
+    <AssemblyName>WpfTreeView</AssemblyName>
+    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="PropertyChanged, Version=1.52.1.0, Culture=neutral, PublicKeyToken=ee3ee20bcf148ddd, processorArchitecture=MSIL">
+      <HintPath>packages\PropertyChanged.Fody.1.52.1\lib\netstandard10\PropertyChanged.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Page Include="MainWindow.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Directory\Data\DirectoryItem.cs" />
+    <Compile Include="Directory\Data\DirectoryItemType.cs" />
+    <Compile Include="Directory\DirectoryStructure.cs" />
+    <Compile Include="Directory\ViewModels\Base\BaseViewModel.cs" />
+    <Compile Include="Directory\ViewModels\DirectoryItemViewModel.cs" />
+    <Compile Include="Directory\ViewModels\Base\RelayCommand.cs" />
+    <Compile Include="Directory\ViewModels\DirectoryStructureViewModel.cs" />
+    <Compile Include="HeaderToImageConverter.cs" />
+    <Compile Include="MainWindow.xaml.cs">
+      <DependentUpon>MainWindow.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="packages.config" />
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+    <AppDesigner Include="Properties\" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <ItemGroup>
+    <Resource Include="Images\drive.png" />
+    <Resource Include="Images\file.png" />
+    <Resource Include="Images\folder-closed.png" />
+    <Resource Include="Images\folder-open.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <Resource Include="FodyWeavers.xml" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <Import Project="packages\Fody.1.29.2\build\dotnet\Fody.targets" Condition="Exists('packages\Fody.1.29.2\build\dotnet\Fody.targets')" />
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('packages\Fody.1.29.2\build\dotnet\Fody.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Fody.1.29.2\build\dotnet\Fody.targets'))" />
+  </Target>
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/WpfTreeView.sln

@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.25420.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WpfTreeView", "WpfTreeView.csproj", "{8A071E7E-F10D-4AB4-B6EF-9069D8D0B2F4}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8A071E7E-F10D-4AB4-B6EF-9069D8D0B2F4}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8A071E7E-F10D-4AB4-B6EF-9069D8D0B2F4}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8A071E7E-F10D-4AB4-B6EF-9069D8D0B2F4}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8A071E7E-F10D-4AB4-B6EF-9069D8D0B2F4}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

WPF/03-TreeViewsSimpleViewModel/WpfTreeView/packages.config

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Fody" version="1.29.2" targetFramework="net452" developmentDependency="true" />
+  <package id="PropertyChanged.Fody" version="1.52.1" targetFramework="net452" developmentDependency="true" />
+</packages>