<div class="codebody" id="code452">
public string formatSize(long size)
{
if (size == 0) return "0";
string[] sizetext = new string[] { " B"," PB" };
int i = (int)Math.Floor(Math.Log(size,1024));
return Math.Round(size / Math.Pow(1024,i),2).ToString() + sizetext[i];
}