通过CreationTime进行文件排序 [英] Files order by CreationTime

问题描述

我正在从目录中读取一些文件.
我很想根据creationDateTime对它进行排序.

这是我的代码段:

Hi,

I am reading some files from a directory.
I jus want to sort it on the basis of creationDateTime.

Here is my code snippet:

DirectoryInfo CHMReaderFolder = new DirectoryInfo("c:\\MyDir");
FileInfo[] DirFiles;
DirFiles = CHMReaderFolder.GetFiles("*.xml");

现在，我想在creationDateTime的基础上对

Now, I want to sort

DirFiles

进行排序.

我正在使用.NET 2.0

on the basis of creationDateTime.

I am using .NET 2.0

推荐答案

void Main()
{
    DirectoryInfo CHMReaderFolder = new DirectoryInfo("c:\\MyDir");
    FileInfo[] DirFiles;
    DirFiles = CHMReaderFolder.GetFiles("*.xml");
    List<FileInfo> list = new List<FileInfo>(DirFiles);
    list.Sort(new Sorter());
}

class Sorter : IComparer<FileInfo>
{
#region IComparer<FileInfo> Members

public int Compare(FileInfo x, FileInfo y)
{
    return x.CreationTime.CompareTo(y.CreationTime);
}

#endregion
}

这比看起来要痛苦得多-Array.Sort方法使用FileInfo的默认IComparable实现，并且您无法覆盖它在派生类中，因为您不能轻易地从GetFiles返回的FileInfo中进行转换！
您可以使用Linq:

That is more of a pain than it looks - the Array.Sort method uses the default IComparable implementation of FileInfo, and you can''t override it in a derived class, because you can''t easily cast up from the FileInfo returned by GetFiles!
You can do it with Linq:

DirectoryInfo di = new DirectoryInfo(@"c:\MyDir");
FileInfo[] files = di.GetFiles("*.xml").OrderBy(fi => fi.CreationTime).ToArray();

但是，如果您只使用.NET 2，那么它不那么容易，因为不包含Linq.

您唯一的其他选择是手动执行此操作:编写您自己的sort方法，或将FileInfo封装到另一个类中并对其进行排序.

But if you are using only .NET 2 that isn''t so easy as Linq is not included.

Your only other option is to do it manually: either write your own sort method, or encapsulate the FileInfo into a different class and sort that.

您可以像这样

you can do like this

DataTable DtTable = new DataTable();
            DtTable.Columns.Add("filename", typeof(string));
            DtTable.Columns.Add("Created", typeof(DateTime));
            DirectoryInfo Diinfo = new DirectoryInfo(@"C:\WINDOWS\");
            FileInfo [] Finfo  = Diinfo.GetFiles();
           
            foreach (FileInfo fi in Finfo)
            {
               DataRow DrNewRow = DtTable.NewRow();
               DrNewRow["filename"] = fi.Name.ToString();
               DrNewRow["Created"] = fi.CreationTime;
               DtTable.Rows.Add(DrNewRow);
            }

            DataView dv = new DataView(DtTable);
            dv.Sort = "Created Asc";
            DataTable NewSortTable = dv.ToTable();
            dataGridView1.DataSource = NewSortTable;

这篇关于通过CreationTime进行文件排序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！