如何按年份和月份将文件分类到文件夹中？

Question

I have a program that will save files in .xml format and have manually added the date when the file is created with System.DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss") . An example is like this Scan 2013-07-15 11-13-31 . I would then need to sort these files that will be generated into folders in the directory of C:\\Users\\name\\Documents\\Scan Archive by years and months.

• Is this naming convention on the file good to do this sorting?

• How do I start coding for this to sort it into C:\\Users\\name\\Documents\\Scan Archive\\2013 and C:\\Users\\name\\Documents\\Scan Archive\\2013\\Jaunuary and so forth.

Answer 1

public static String GetDirectoryName(DateTime time, String rootpath)
{
    String year = String.Format("{0:yyyy}", time);
    String month = String.Format("{0:MM}", time) + String.Format("{0:MMM}", time);
    String day = String.Format("{0:dd}", time);
    String filepath = Path.Combine(rootpath, "y" + year);
    filepath = Path.Combine(filepath, "m" + month);
    filepath = Path.Combine(filepath, "d" + day);
    return filepath;
}

This creates a directory path given a rootpath (such as C:\\users\\name\\Documents\\Scan Archive ) and a DateTime . You'd use the date referenced by your file's name. Just parse out the file name into a DateTime .

As others have said in comments, don't use the name of the month unless its after some numeric values. I'd leave it out entirely as I find it slightly verbose.

Its easy to tack a file name onto the end of this path, and create all required directories when creating the file. Problem solved!

Edit: To create directories while creating some new file:

string dirpath = GetDirectoryName(date, "C:\Users\Name");
Directory.CreateDirectory(dirpath);
string filePpath = Path.combine(dirpath,"myfilename.txt");
FileInfo info = new FileInfo(filePath);
info.Create().Close();