C#实现简单的文件夹对比程序(续)

上一篇文章实现了可视化显示不同路径下相同文件夹内的文件和子文件夹差异,文件少时已经够用,但当有成百上千个子文件夹时,人工逐个查看文件夹差异就比较困难,因此本文实现循环查找文件夹内容差异并导出为本地Excel文件的功能。
  本文使用队列保存要差异对比的文件夹及子文件夹路径,没有使用递归,代码逻辑看着稍微有点别扭,主要代码如下:

csharp 复制代码
List<DirectoryCompareRecord> results= new List<DirectoryCompareRecord>();

Queue<string> subDirs= new Queue<string>();

string leftDir=txtLeftDir.Text.TrimEnd('\\');
string rightDir=txtRightDir.Text.TrimEnd('\\');
string curLeftDir = string.Empty;
string curRightDir = string.Empty;

List<string> subLeftDirs = new List<string>();
List<string> subRightDirs = new List<string>();
List<string> subLeftFiles = new List<string>();
List<string> subRightFiles = new List<string>();

string tmpFileName = string.Empty;
string tmpDirName = string.Empty;
string tmp = string.Empty;

FileInfo leftFile = null;
FileInfo rightFile = null;

do
{                
    curLeftDir = Path.Combine(leftDir, tmp);
    curRightDir = Path.Combine(rightDir, tmp);

    subLeftDirs.Clear();
    subRightDirs.Clear();
    subLeftFiles.Clear();
    subRightFiles.Clear();
    

    subLeftFiles.AddRange(Directory.GetFiles(curLeftDir));
    subRightFiles.AddRange(Directory.GetFiles(curRightDir));

    subLeftFiles.Sort();
    subRightFiles.Sort();

    foreach (string file in subLeftFiles)
    {
        tmpFileName = Path.GetFileName(file);
        tmpDirName = Path.Combine(curRightDir, tmpFileName);

        if (!subRightFiles.Contains(tmpDirName))
        {
            DirectoryCompareRecord record = new DirectoryCompareRecord();
            record.ObjectType = "文件";
            record.ResultType = "文件缺失";
            record.LeftDirectory = curLeftDir;
            record.LeftFile = tmpFileName;

            results.Add(record);
        }
        else
        {
            leftFile=new FileInfo(file);
            rightFile=new FileInfo(tmpDirName);

            if (leftFile.LastWriteTime != rightFile.LastWriteTime)
            {
                DirectoryCompareRecord record = new DirectoryCompareRecord();
                record.ObjectType = "文件";
                record.ResultType = "文件有差异";
                record.LeftDirectory = curLeftDir;
                record.LeftFile = tmpFileName;
                record.LeftFileLastModifyDate = leftFile.LastWriteTime.ToString();
                record.RightDirectory = curRightDir;
                record.RightFile = tmpFileName;
                record.RightFileLastModifyDate = rightFile.LastWriteTime.ToString();

                results.Add(record);
            }
            else
            {
                subRightFiles.Remove(tmpDirName);
            }                        
        }
    }

    foreach (string file in subRightFiles)
    {
        tmpFileName = Path.GetFileName(file);
        tmpDirName = Path.Combine(curLeftDir, tmpFileName);

        if (!subLeftFiles.Contains(tmpDirName))
        {
            DirectoryCompareRecord record = new DirectoryCompareRecord();
            record.ObjectType = "文件";
            record.ResultType = "文件缺失";
            record.RightDirectory = curRightDir;
            record.RightFile = tmpFileName;

            results.Add(record);
        }
    }

    subLeftDirs.AddRange(Directory.GetDirectories(curLeftDir));
    subRightDirs.AddRange(Directory.GetDirectories(curRightDir));

    subLeftDirs.Sort();
    subRightDirs.Sort();

    foreach (string dir in subLeftDirs)
    {
        tmpFileName = Path.GetFileName(dir);
        tmpDirName = Path.Combine(curRightDir, tmpFileName);

        if (!subRightDirs.Contains(tmpDirName))
        {
            DirectoryCompareRecord record = new DirectoryCompareRecord();
            record.ObjectType = "文件夹";
            record.ResultType = "文件夹缺失";
            record.LeftDirectory = curLeftDir;
            record.LeftFile = tmpFileName;

            results.Add(record);
        }
        else
        {
            subDirs.Enqueue(dir.Substring(leftDir.Length+1));
            subRightFiles.Remove(tmpDirName);                        
        }
    }

    foreach (string file in subRightDirs)
    {
        tmpFileName = Path.GetFileName(file);
        tmpDirName = Path.Combine(curLeftDir, tmpFileName);

        if (!subLeftDirs.Contains(tmpDirName))
        {
            DirectoryCompareRecord record = new DirectoryCompareRecord();
            record.ObjectType = "文件夹";
            record.ResultType = "文件夹缺失";
            record.RightDirectory = curRightDir;
            record.RightFile = tmpFileName;

            results.Add(record);
        }
    }

    if(subDirs.Count>0)
    {
        tmp=subDirs.Dequeue();
    }
    
} while (subDirs.Count >0);

对比结果导出Excel文件采用Sylvan.Data.Excel库,代码实现也比较简单,如下所示:

csharp 复制代码
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Filter = "XLSX|*.xlsx";
if (saveFileDialog.ShowDialog() != DialogResult.OK)
{
    return;
}

DbDataReader reader = ObjectDataReader.Create(results);
using (var w = ExcelDataWriter.Create(saveFileDialog.FileName))
{
    w.Write(reader);
}

最后是程序运行效果及导出文件的效果,代码地址:https://github.com/guochao2299/DirCompare

参考文献:

1\]https://blog.csdn.net/sd7o95o/article/details/142976888 \[2\]https://github.com/MarkPflug/Sylvan.Data.Excel

相关推荐
CoderPractice1 小时前
C#控制台小项目-飞行棋
开发语言·c#·小游戏·飞行棋
ajassi20002 小时前
开源 C# .net mvc 开发(八)IIS Express轻量化Web服务器的配置和使用
linux·开源·c#·mvc·.net
19H7 小时前
Flink-Source算子状态恢复分析
c#·linq
枯萎穿心攻击9 小时前
响应式编程入门教程第二节:构建 ObservableProperty<T> — 封装 ReactiveProperty 的高级用法
开发语言·unity·c#·游戏引擎
Eiceblue10 小时前
【免费.NET方案】CSV到PDF与DataTable的快速转换
开发语言·pdf·c#·.net
昏睡红猹18 小时前
C#脚本化(Roslyn):如何在运行时引入nuget包
c#
张人玉18 小时前
C# 常量与变量
java·算法·c#
就是有点傻19 小时前
在C#中,可以不实例化一个类而直接调用其静态字段
c#
软件黑马王子19 小时前
C#系统学习第八章——字符串
开发语言·学习·c#
阿蒙Amon19 小时前
C#读写文件:多种方式详解
开发语言·数据库·c#