C#实现对指定文件夹中文件按修改时间排序

string path = "~/Document/Introduction/团队管理制度/";
            DirectoryInfo dirinfo = new DirectoryInfo(Server.MapPath(path));
            FileInfo[] Files = dirinfo.GetFiles();
            Array.Sort<FileInfo>(Files, new FIleLastTimeComparer());

//在页面上显示最近更新的两个文件的下载链接
            for (int i = 0; i < 2; i++)
            {
                Literal literal = new Literal();
                literal.Text = "</br>";
                Panel1.Controls.Add(literal);//实现换行显示
                HyperLink hypelink = new HyperLink();
                hypelink.NavigateUrl = path + Files[i].Name;
                hypelink.Text = Files[i].Name;
                Panel1.Controls.Add(hypelink);

}

public class FIleLastTimeComparer : IComparer<FileInfo>
    {
        public int Compare(FileInfo x, FileInfo y)
        {
            return y.LastWriteTime.CompareTo(x.LastWriteTime);//递减
          //return x.LastWriteTime.CompareTo(y.LastWriteTime);//递增
        }
    }

using System.IO;

private void button1_Click(object sender, EventArgs e)

{

//DirectoryInfo[] list = new DirectoryInfo(path).GetDirectories();// path：文件夹路径

DirectoryInfo[] list = new DirectoryInfo(@"D:\软件").GetDirectories();

Array.Sort<DirectoryInfo>(list, new DirectoryLastTimeComparer());

textBox1.Text = list[list.Length - 1].FullName;//文件夹的全路径以及名字

textBox1.Text = list[list.Length - 1].Name; //文件夹的名字

}

private void button2_Click(object sender, EventArgs e)

{

FileInfo[] list = new DirectoryInfo(@"D:\软件").GetFiles();

Array.Sort<FileInfo>(list, new FIleLastTimeComparer());

textBox1.Text = list[list.Length - 1].FullName;//文件的全路径以及名字

textBox1.Text = list[list.Length - 1].Name; //文件的名字

}

}

//文件夹中按时间排序最新的文件读取

public class DirectoryLastTimeComparer : IComparer<DirectoryInfo>

{

#region IComparer<DirectoryInfo> 成员

public int Compare(DirectoryInfo x, DirectoryInfo y)

{

return x.LastWriteTime.CompareTo(y.LastWriteTime);

//依名称排序

//return x.FullName.CompareTo(y.FullName);//递增

//return y.FullName.CompareTo(x.FullName);//递减

//依修改日期排序

//return x.LastWriteTime.CompareTo(y.LastWriteTime);//递增

//return y.LastWriteTime.CompareTo(x.LastWriteTime);//递减

}

#endregion

}

//文件夹中按时间排序最新的文件读取

public class FIleLastTimeComparer : IComparer<FileInfo>

{

#region IComparer<FileInfo> 成员

public int Compare(FileInfo x, FileInfo y)

{

return x.LastWriteTime.CompareTo(y.LastWriteTime);

}

#endregion

}

就可以使用Array.Sort()方法来对其进行调用。当然，你也可以按创建时间来进行排序。

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