目录获取和处理；
string path = ".";//表明要在当前所在的目录
//先定义目录信息变量
DirectoryInfo dir = new DirectoryInfo(path);
foreach(FileInfo ld in dir.GetFiles())
{
string name = ld.Name;
long size = ld.Length;
DateTime time = ld.CreationTime;
Console.WriteLine("{0,-12:N0}{1,-20:g}{2}",size,name,time);
}
//制定目录名称
string pa = "E:/Cprogram";
DirectoryInfo din = new DirectoryInfo(pa);
Console.WriteLine(dirsize(din).ToString());
Console.ReadKey();
public static double dirsize(DirectoryInfo d)
{
double size = ;
//寻找当前目录的文件，并计算其大小
FileInfo[] fis = d.GetFiles();
foreach(FileInfo fi in fis)
{
size += fi.Length;
}
//寻找当前目录下面的目录，并计算每个目录的大小
DirectoryInfo[] dis = d.GetDirectories();
foreach(DirectoryInfo di in dis)
{
size += dirsize(di);
}
return size;
}