jsonw23

using System.Collections.Generic;

namespace GeekJ.Examples.ContactForm.Models
{
    public class Contact
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Email { get; set; }

jsonw23

namespace GeekJ.FolderTreeControl.Model
{
    public class Drive : FolderTreeItem
    {
        private DriveInfo _driveInfo;
        public DriveInfo DriveInfo
        {
            get
            {
                return _driveInfo;

jsonw23

<UserControl x:Class="GeekJ.FolderTreeControl.FolderTree"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300"
             Loaded="FolderTree_Loaded">
    <Grid>
        <TreeView ItemsSource="{Binding Path=Drives}">

jsonw23

<TreeView ItemsSource="{Binding Path=Drives}" TreeViewItem.Expanded="FolderTree_Expanded">
    <TreeView.ItemContainerStyle>
                <Style TargetType="TreeViewItem">
                    <Setter Property="IsExpanded" Value="{Binding Path=IsExpanded, Mode=TwoWay}" />
                </Style>
            </TreeView.ItemContainerStyle>
    <TreeView.ItemTemplate>
        <HierarchicalDataTemplate ItemsSource="{Binding Path=Folders}">
            <TextBlock Text="{Binding Path=Label}" />
        </HierarchicalDataTemplate>

jsonw23

<UserControl x:Class="GeekJ.FolderTreeControl.FolderTree"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:model="clr-namespace:GeekJ.FolderTreeControl.Model"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300"
             Loaded="FolderTree_Loaded" DataContextChanged="FolderTree_DataContextChanged">
    <UserControl.Resources>

jsonw23

<Window x:Class="Demo.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:ftc="clr-namespace:GeekJ.FolderTreeControl;assembly=GeekJ.FolderTreeControl"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <ftc:FolderTree />
    </Grid>
</Window>

jsonw23

namespace GeekJ.FolderTreeControl
{
    public partial class FolderTree : UserControl
    {
        private FolderTreeSelection _selection = new FolderTreeSelection();
        public FolderTreeSelection Selection
        {
            get { return _selection; }
            set
            {

jsonw23

public void Add(FolderTreeItem folderTreeItem, bool include = true)
{
    if (folderTreeItem.SelectionItem == null && include)
    {
        // node is checked for the first time, add a selection item
        folderTreeItem.SelectionItem = new Item() { TreeItem = folderTreeItem, Include = include };
        items.Add(folderTreeItem.SelectionItem);
    }
    else if (folderTreeItem.SelectionItem != null && folderTreeItem.SelectionItem.Include != include)
    {

jsonw23

public partial class FolderTree : UserControl
{
    private FolderTreeSelection _selection;
    public FolderTreeSelection Selection
    {
        get { return _selection; }
        set
        {
            _selection = value;
            _selection.Changed += new EventHandler(OnSelectionChanged);

jsonw23

public class FolderTreeSelection : ViewModelBase
{
    private Dictionary<Item, long> itemCounts = new Dictionary<Item, long>(); 

    public long FolderCount {
        get
        {
            return itemCounts.Sum(x => x.Value);
        }
    }