Convert bytes to KB, MB, GB, TB or higher using c#

12 Apr 2013 — Programming

I’m a great believer in making the most of available compute resources, and I quite appreciate clean and optimised code.

Shailesh from http://www.somacon.com has done an excellent job with this method to convert an integer representing a byte count in to a human-friendly string shown below with minor cosmetic modifications to reduce the character count.

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/// <summary>
/// Returns a human-readable size discriptor for up 64-bit length fields
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
private static string FormatBytes(Int64 bytes)
{
if (bytes >= 0x1000000000000000) { return ((double)(bytes >> 50) / 1024).ToString("0.### EB"); }
if (bytes >= 0x4000000000000) { return ((double)(bytes >> 40) / 1024).ToString("0.### PB"); }
if (bytes >= 0x10000000000) { return ((double)(bytes >> 30) / 1024).ToString("0.### TB"); }
if (bytes >= 0x40000000) { return ((double)(bytes >> 20) / 1024).ToString("0.### GB"); }
if (bytes >= 0x100000) { return ((double)(bytes >> 10) / 1024).ToString("0.### MB"); }
if (bytes >= 0x400) { return ((double)(bytes) / 1024).ToString("0.###") + " KB"; }
return bytes.ToString("0 Bytes");
}

Here is the original snippet Shailesh posted.

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