【C#】【IO】【实例】接上一个统计的新功能

先用Python来创建多层级文件夹：

import os

root_path = r"C:\Users\Desktop\文案整理\Practice"

for item in range(1, 41):
    foldname = os.path.join(root_path, str(item))
    os.mkdir(foldname)

    foldname_son1 = os.path.join(foldname, str(item) + f'.{item}')
    os.mkdir(foldname_son1)

    for i_item in range(1, 501):
        foldname_son1_son = os.path.join(foldname_son1, str(i_item) + f'..{i_item}')
        os.mkdir(foldname_son1_son)

得到的树结构：

|-practice
|  |- 1
|  |  |- 1.1
|  |  |  |- 1..1
        ...
|  |  |  |- 500..500

读取遍历所有文件并将路径保存到文本中，然后再将指定图片保存到指定文件夹中：

string fi = @"C:\Users\Desktop\文案整理\Practice"; // 整图文件夹
string SN_txt = @"C:\Users\Desktop\文案整理\SN_NaemCollection.txt"; // 所有SN的路径记录
string targefold = @"C:\Users\Desktop\文案整理\New"; // SN保存路径
string SN = "302..302"; // SN编号
Save_SNPath(fi, SN_txt);
CopySN_Picture(FindSN_Picture(SN_txt, SN), targefold);

void Save_SNPath(string fi, string SN_txt)
{
    // 清空文件内容
    File.WriteAllText(SN_txt, String.Empty);
    foreach (var item in Directory.GetDirectories(fi))
        foreach (var i_item in Directory.GetDirectories(item))
            foreach (var ii_item in Directory.GetDirectories(i_item))
                // 保存SN路径
                using (StreamWriter write = new StreamWriter(SN_txt, true))
                    write.WriteLine(ii_item);
}

string FindSN_Picture(string SN_txt, string SN)
{
    // 查找SN_Picture
    string [] f = File.ReadAllLines(SN_txt);
    foreach (var item in f)
        if (item.Contains(SN))
        {
            // 因 *..* 结构文件夹名会重复，所以需要再次遍历
            string[] pic = Directory.GetFiles(item, "*.jpg");
            if (pic.Length > 0)
                foreach(var i in pic)
                    return i;
        }
    return "NULL";
}

void CopySN_Picture(string soursefold, string targefold)
{
    string ssfold = Path.Combine(targefold, DateTime.Now.ToString("d").Replace("/", "_") + "_SN");
    // 创建当日SN文件夹
    Directory.CreateDirectory(ssfold);

    // 复制SN中的图片至SN文件夹
    File.Copy(soursefold, Path.Combine(ssfold, "2.jpg"));
}

后续将继续更新其他功能...