C#–檔案的大小

前言:

單位	描述
bit	位. 一個位元據0或1，是1bit
byte	位元組: 儲存空間的基礎單位. 1byte=8bit

 

b=bit 表示“位”
B=Byte 表示“位元組”

代碼:

public class FileSize{    DirectoryInfo Dic;    public FileSize(string FolderPath)    {        //        //TODO: 在此處添加建構函式邏輯        //        Dic = new DirectoryInfo(FolderPath);    }    public void ListFileSize()    {        FileInfo[] files = Dic.GetFiles();        if (files.Length > 0)        {            HttpResponse response = HttpContext.Current.Response;            response.Write("<table style='border:solid 1px black;border-collapse:collapse;'>");            foreach (FileInfo fi in files)            {                response.Write("<tr>");                response.Write("<td style='border:solid 1px black'>" + fi.Name+"</td>");                response.Write("<td style='border:solid 1px black'>" + CalculateSize(fi.Length) + "</td>");                response.Write("</tr>");            }            response.Write("</table>");        }    }    private string CalculateSize(long size)    {        string length = string.Empty;        if (size < 1024)        {            length = size + "bytes";        }        else            if (size < 1024 * 1024)            {                length = float.Parse((size * 10 / 1024).ToString()) / 10 + "KB";            }            else                if (size < 1024 * 1024 * 1024)                {                    length = float.Parse((size * 10 / 1048576).ToString()) / 10 + "MB";                }                else                {                    length = float.Parse((size * 10 / 1073741824).ToString()) / 10 + "GB";                }        return length;    }    }

 

效果: