文件比较平常都是用Beyond Compare，可以说离不开的神器，特别是针对代码比较这块，确实挺好用的。
不过Beyond Compare平常拿它主要是用来做代码比较，用来做一些大批量的二进制文件比较，其实有点不是很方便。
于是造轮子，重新写了一个简单的文件夹比较的小工具。
平常主要是拿来做一些Nuget包的比对，应用包版本的比较。
文件夹比较逻辑，采用迭代比较的方式：
using CgdataBase;
using FolderCompare.Models;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace FolderCompare.Helpers
{
public static class CompareHelper
{
public static void CompareDirectory(CgDirectoryInfo path1, CgDirectoryInfo path2)
{
if (path1.Children.IsNullOrEmpty())
{
if (path2.Children.IsNullOrEmpty())
{
path1.Result = ECompareResult.匹配;
path2.Result = ECompareResult.匹配;
}
else
{
path1.Result = ECompareResult.空;
path2.Result = ECompareResult.孤立;
SetCompareResult(path2, ECompareResult.匹配);
}
return;
}
if (path2.Children.IsNullOrEmpty())
{
path1.Result = ECompareResult.孤立;
path2.Result = ECompareResult.空;
SetCompareResult(path1, ECompareResult.匹配);
return;
}
var dirList = new List<string>();
var fileList = new List<string>();
dirList.AddRange(path1.Children.Where(s => s.IsDirectory).Select(s => s.Name));
dirList.AddRange(path2.Children.Where(s => s.IsDirectory).Select(s => s.Name));
fileList.AddRange(path1.Children.Where(s => !s.IsDirectory).Select(s => s.Name));
fileList.AddRange(path2.Children.Where(s => !s.IsDirectory).Select(s => s.Name));
var index = 0;
if (dirList.HadItems())
{
var items = dirList.Distinct().ToList();
items.Sort();
foreach (var item in items)
{
var dir1 = path1.Children.OfType<CgDirectoryInfo>().SingleOrDefault(s => s.Name == item);
if (dir1 == null)
{
dir1 = new CgDirectoryInfo();
dir1.Result = ECompareResult.空;
path1.Children.Insert(index, dir1);
var dir2 = path2.Children.OfType<CgDirectoryInfo>().Single(s => s.Name == item);
dir2.Result = ECompareResult.孤立;
var old = path2.Children.IndexOf(dir2);
path2.Children.Move(old, index);
SetCompareResult(dir2, ECompareResult.匹配);
}
else
{
var dir2 = path2.Children.OfType<CgDirectoryInfo>().SingleOrDefault(s => s.Name == item);
if (dir2 == null)
{
dir2 = new CgDirectoryInfo();
dir2.Result = ECompareResult.空;
path2.Children.Insert(index, dir2);
dir1.Result = ECompareResult.孤立;
var old = path1.Children.IndexOf(dir1);
path1.Children.Move(old, index);
SetCompareResult(dir1, ECompareResult.匹配);
}
else
{
CompareDirectory(dir1, dir2);
var old = path1.Children.IndexOf(dir1);
path1.Children.Move(old, index);
old = path2.Children.IndexOf(dir2);
path2.Children.Move(old, index);
}
dir2.Index = index;
}
dir1.Index = index;
index++;
}
}
if (fileList.HadItems())
{
var items = fileList.Distinct().ToList();
items.Sort();
foreach (var item in items)
{
var file1 = path1.Children.OfType<CgFileInfo>().SingleOrDefault(s => s.Name == item);
if (file1 == null)
{
file1 = new CgFileInfo();
file1.Result = ECompareResult.空;
path1.Children.Insert(index, file1);
var file2 = path2.Children.OfType<CgFileInfo>().Single(s => s.Name == item);
file2.Result = ECompareResult.孤立;
var old = path2.Children.IndexOf(file2);
path2.Children.Move(old, index);
}
else
{
var file2 = path2.Children.OfType<CgFileInfo>().SingleOrDefault(s => s.Name == item);
if (file2 == null)
{
file2 = new CgFileInfo();
file2.Result = ECompareResult.空;
path2.Children.Insert(index, file2);
file1.Result = ECompareResult.孤立;
var old = path1.Children.IndexOf(file1);
path1.Children.Move(old, index);
}
else
{
CompareFile(file1, file2);
var old = path1.Children.IndexOf(file1);
path1.Children.Move(old, index);
old = path2.Children.IndexOf(file2);
path2.Children.Move(old, index);
}
file2.Index = index;
}
file1.Index = index;
index++;
}
}
path1.Result = GetCompareResult(path1.Children);
path2.Result = GetCompareResult(path2.Children);
}
private static void CompareFile(CgFileSystemInfo info1, CgFileSystemInfo info2)
{
if (info1.Name.IsNullOrEmpty())
{
info1.Result = ECompareResult.空;
info2.Result = ECompareResult.孤立;
return;
}
if (info2.Name.IsNullOrEmpty())
{
info1.Result = ECompareResult.孤立;
info2.Result = ECompareResult.空;
return;
}
if (info1.Length == info2.Length && info1.LastWriteTime == info2.LastWriteTime)
{
info1.Result = ECompareResult.匹配;
info2.Result = ECompareResult.匹配;
}
else
{
if (info1.LastWriteTime > info2.LastWriteTime)
{
info1.Result = ECompareResult.不匹配;
info2.Result = ECompareResult.较旧的;
}
else
{
info1.Result = ECompareResult.较旧的;
info2.Result = ECompareResult.不匹配;
}
}
}
private static void SetCompareResult(CgDirectoryInfo info, ECompareResult result)
{
if (info.Children.HadItems())
{
foreach (var item in info.Children)
{
if (item is CgDirectoryInfo dir)
{
dir.Result = result;
SetCompareResult(dir, result);
}
else if (item is CgFileInfo file)
{
file.Result = result;
}
}
}
}
public static ECompareResult GetCompareResult(ObservableCollection<CgFileSystemInfo> items)
{
if (items.IsNullOrEmpty())
return ECompareResult.空;
if (items.Any(s => s.Result == ECompareResult.不匹配 || s.Result == ECompareResult.较旧的))
return ECompareResult.不匹配;
if (items.Any(s => s.Result == ECompareResult.孤立))
return ECompareResult.孤立;
return ECompareResult.匹配;
}
}
}
源码：https://gitee.com/wzwyc/FolderCompare
以上就是基于WPF实现简单的文件夹比较工具的详细内容，更多关于WPF文件夹比较的资料请关注其它相关文章！
