WPF 查找大小相同文件/图片

假设文件大小一样就表示文件一模一样，是重复文件

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;
using System.IO;
namespace EnhanceImage
{

    public partial class FindSamePicWind : Window
    {
        public FindSamePicWind()
        {
            InitializeComponent();
            List<FileInfo> find = new List<FileInfo>();
            //d:\Downloads
            string path = @"d:\Downloads";
            var files = Directory.GetFiles(path, "*.jpg");
            var list = new List<FileInfo>();
            foreach (var f in files)
            {
                FileInfo fi = new FileInfo(f);
                list.Add(fi);
            }
            foreach (var f in list)
            {

                var all = list.Where(n => n.Length == f.Length);
                if (all.Count() > 1)
                {
                    foreach (var item in all)
                    {
                        if (!find.Contains(item))
                        {
                            find.Add(item);
                            Console.WriteLine(f.FullName);
                            var img = new Image() { ToolTip=f.Name, Tag = f.FullName, MaxWidth = 200, Source = LoadImage(f.FullName) };
                            img.MouseLeftButtonDown += Img_MouseLeftButtonDown;
                            wrapPanel.Children.Add( img  );
                        }
                    }
                }

            }

        }

        private void Img_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            var f = "" + (sender as Image).Tag;
            File.Delete(f);

            wrapPanel.Children.Remove((sender as Image));

        }

        BitmapImage LoadImage(string f) {

            BitmapImage bmp = new BitmapImage();
            bmp.BeginInit();
            bmp.CacheOption = BitmapCacheOption.OnLoad;
            using(MemoryStream ms=new MemoryStream(File.ReadAllBytes(f)))
            {
                ms.Position = 0;
                bmp.StreamSource = ms;// new Uri(f,UriKind.RelativeOrAbsolute);

            bmp.EndInit();
            bmp.Freeze();
            }

            return bmp;
        }

    }
}

　　

XAML：

<Window x:Class="EnhanceImage.FindSamePicWind"
        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:EnhanceImage"
        mc:Ignorable="d"
        Title="FindSamePicWind" Height="450" Width="800">
    <Grid>
        <RichTextBox AcceptsReturn="True" x:Name="txt"></RichTextBox>
        <ScrollViewer VerticalScrollBarVisibility="Auto">
            <WrapPanel Name="wrapPanel"></WrapPanel>
        </ScrollViewer>

    </Grid>
</Window>