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private string FormatByteSize(long length)
{
const int KB = 1024;
const int MB = 1024 * KB;
const int GB = 1024 * MB;
if (length > GB)
{
return (length / GB).ToString("0.00") + " GB";
}
else if (length > MB)
{
return (length / MB).ToString("0.00") + " MB";
}
else if (length > KB)
{
return (length / KB).ToString("0.00") + " KB";
}
return length.ToString()+" Bytes";
}