Question

我有一个大约30-40个文件夹的目录，其中包含CRM系统的各种备份文件。

我开发了一个从远程服务器下载文件的脚本，并将它们放在YYYYMMDD的文件夹中，但是由于空间限制，我现在需要从目录中移动最旧的文件夹。由于公司的IT团队不断在服务器之间移动文件夹，我无法使用文件夹创建日期！

最简单的选择是什么？我查看过：deleting the oldest folder by identifying from the folder name并尝试订购商品然后执行移动。

我的另一个选择是获取根目录中的所有文件夹名称，解析为类型时间和日期列表，选择最低（最旧）选项，然后执行文件移动？

Answer 1

这样的事情怎么样：

    bool MoveOldestFolder(string initialFolderName, string destinationFolder)
    {
        // gets all top folders in your chosen location
        var directories = System.IO.Directory.EnumerateDirectories(initialFolderName,"*", System.IO.SearchOption.TopDirectoryOnly);

        // stores the oldest folder and it's date at the end of algorithm
        DateTime outDate;
        DateTime oldestDate = DateTime.MaxValue;
        string resultFolder = string.Empty;

        // just a temp variable
        string tmp;

        // using LINQ
        directories.ToList().ForEach(p =>
        {
            tmp = new System.IO.FileInfo(p).Name; // get the name of the current folder
            if (DateTime.TryParseExact(tmp,
                                       "yyyyMMdd",  // this is case sensitive!
                                       System.Globalization.CultureInfo.InvariantCulture,
                                       System.Globalization.DateTimeStyles.None, 
                                       out outDate)) // try using folder name as date that "should" be in yyyyMMdd format - if the conversion is successful and date is older than current outDate, then store folder name and date, else nothing
            {
                if (outDate.Date < oldestDate.Date)
                {
                    oldestDate = outDate;
                    resultFolder = p;
                }
            }
        });


        // if we actually found a folder that is formatted in yyyyMMdd format
        if (!oldestDate.Equals(DateTime.MaxValue))
        {
            try
            {
                System.IO.Directory.Move(resultFolder, destinationFolder);

                return true;
            }
            catch(Exception ex)
            {
                // handle the excaption
                return false;
            }
        }
        else
        {
            // we didnt find anything
            return false;
        }
    }

private void button1_Click(object sender, EventArgs e)
{
    var initialFolderName = @"C:\initial";
    var destinationFolder = @"c:\dest";

    if (MoveOldestFolder(initialFolderName, destinationFolder))
    {
        // move was successful                
    }
    else
    {
        // something went wrong
    }
}

其他选择就是简单地执行chrfin所说的内容，但我不会假设所有内容都是＆＃34; dandy＆＃34;在文件夹结构中。文件夹名称总是有可能不是YYYYMMDD格式，这可能会导致我想象的一些问题。无论如何，代码看起来像这样：

    var directories = System.IO.Directory.EnumerateDirectories(initialFolderName,"*", System.IO.SearchOption.TopDirectoryOnly);
    directories.ToList<string>().Sort();
    var lastDir = directories.First();

根据名称移动最旧的文件夹（YYYYMMDD）

1 个答案: