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
浅陌sss3 小时前
C#中实现XML解析器
xml·c#
全栈师6 小时前
C#中分组循环的做法
开发语言·c#
FAREWELL000756 小时前
C#进阶学习(十六)C#中的迭代器
开发语言·学习·c#·迭代器模式·迭代器
DXM05216 小时前
牟乃夏《ArcGIS Engine地理信息系统开发教程》学习笔记3-地图基本操作与实战案例
开发语言·笔记·学习·arcgis·c#·ae·arcgis engine
csdn_aspnet9 小时前
C# 如何验证磁盘路径,如:D:\\m\aa.txt
c#
电商api接口开发11 小时前
ASP.NET MVC 入门指南四
c#·asp.net·mvc
CHQIUU11 小时前
跨语言哈希一致性:C# 与 Java 的 MD5 之战?
java·c#·哈希算法
技术拾荒者12 小时前
c#加密证件号的中间部分,改为*号
c#
weixin_4239950013 小时前
unity 读取csv
unity·c#
绿龙术士14 小时前
C#核心知识
c#·.net