WPF File/Folder Picker

FilePicker.cs

//https://user-images.githubusercontent.com/33064621/71083553-31544b00-218b-11ea-97af-74280ecaef96.png

using System;
using System.Windows;
using System.Windows.Controls;

//Requires NuGet Package: "https://www.nuget.org/packages/Microsoft.WindowsAPICodePack-Shell"
using Microsoft.WindowsAPICodePack.Dialogs;

public class FilePicker : UserControl
{
    #region Properties

    #region - Bindable Property Declaration

    public static readonly DependencyProperty FilePathProperty =
        DependencyProperty.Register(
            nameof(FilePath),
            typeof(string),
            typeof(FilePicker),
            new PropertyMetadata(
                string.Empty,
                OnFilePathChanged)
            );

    public static readonly DependencyProperty PickerTypeProperty =
        DependencyProperty.Register(
            nameof(PickerType),
            typeof(FilePickerType),
            typeof(FilePicker),
            new PropertyMetadata(FilePickerType.File)
            );

    #endregion - Bindable Property Declaration

    #region - Bindable Properties

    public string FilePath
    {
        get { return (string)GetValue(FilePathProperty); }
        set { SetValue(FilePathProperty, value); }
    }

    public FilePickerType PickerType
    {
        get { return (FilePickerType)GetValue(PickerTypeProperty); }
        set { SetValue(PickerTypeProperty, value); }
    }

    #endregion - Bindable Properties

    #region - Class Properties

    public enum FilePickerType
    {
        File,
        Folder
    }

    private Grid _contentGrid { get; set; }

    private bool _fileDialogIsBusy = false;

    private TextBox _textBox { get; set; }

    #endregion - Class Properties

    #endregion Properties

    public FilePicker()
    {
        InitializeComponent();   
    }

    #region Methods

    #region - Draw View Methods

    private void InitializeComponent()
    {
        _contentGrid = new Grid();

        _contentGrid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
        _contentGrid.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(25) });

        _textBox = new TextBox();
        var button = new Button() { Content = "..." };

        button.Click += OnButtonClicked;
        _textBox.TextChanged += OnTextChanged;

        Grid.SetColumn(_textBox, 0);
        Grid.SetColumn(button, 1);

        _contentGrid.Children.Add(_textBox);
        _contentGrid.Children.Add(button);

        this.Content = _contentGrid;
    }

    private void OnTextChanged(object sender, TextChangedEventArgs e)
    {
        var textbox = (TextBox)sender;

        FilePath = ((TextBox)sender).Text;
    }

    #endregion - Draw View Methods

    #region - Binded Property Changed Methods

    private static void OnFilePathChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        FilePicker control = (FilePicker)d;

        control._textBox.Text = (string)e.NewValue;
    }

    #endregion - Binded Property Changed Methods

    #region - OnEvent Methods

    private void OnButtonClicked(object sender, RoutedEventArgs e)
    {
        if (_fileDialogIsBusy)
            return;

        _fileDialogIsBusy = true;

        string selectedPath = string.Empty;

        //WIN FORMS HISSSSSSS
        //using (var fbd = new System.Windows.Forms.FolderBrowserDialog())
        //{
        //    System.Windows.Forms.DialogResult result = fbd.ShowDialog();

        //    if (result == System.Windows.Forms.DialogResult.OK && !string.IsNullOrWhiteSpace(fbd.SelectedPath))
        //    {
        //        selectedPath = fbd.SelectedPath;
        //    }
        //}

        if (CommonFileDialog.IsPlatformSupported)
        {
            var dialog = new CommonOpenFileDialog();

            switch (PickerType)
            {
                case FilePickerType.File:
                    dialog.IsFolderPicker = false;
                    dialog.Title = "Select File";
                    break;

                case FilePickerType.Folder:
                    dialog.IsFolderPicker = true;
                    dialog.Title = "Select Folder";
                    break;
            }

            dialog.InitialDirectory = Environment.CurrentDirectory;

            CommonFileDialogResult result = dialog.ShowDialog();

            if (result == CommonFileDialogResult.Ok)
            {
                selectedPath = dialog.FileName;
                _textBox.Text = selectedPath;
            } 
        }
        else
        {
            MessageBox.Show("Windows Versions Below Vista Are Not Supported By This Application");
            //MessageBox.Show("GET A MORE MODERN OPERATING SYSTEM!!!!");
        }

        System.Diagnostics.Debug.WriteLine(selectedPath);

        _fileDialogIsBusy = false;
    }

    #endregion - OnEvent Methods

    #endregion Methods
}

A very basic file picker control, invoke in xaml as such:

<controls:FilePicker FilePath="{Binding ExportPath}" PickerType="Folder"/>

Can be easily expanded to add new bindable properties, I only needed these ones!