FormatFileSize

FormatFileSize.cs

private string FormatFileSize(long size)
{
	return FormatFileSize((double)size);
}
private string FormatFileSize(double size)
{
	string output = string.Empty;
	string append = string.Empty;
	string format = string.Empty;
	if (size < 1000)
	{
		format = "b"; append = " bytes";
	}
	else if (size > 999 && size < 1000000)
	{
		format = "kb"; append = " kb";
	}
	else
	{
		format = "mb"; append = " mb";
	}
	if (format == "b") output = size + append;
	if (format == "kb")
	{
		// divide by 1024 to get the size in kb
		size = size / 1024;
		// multiply by 10 to the power of 2
		size = size * Math.Pow(10, 2);
		// round up/down the new file size, and divide to remove the power and return the correct value
		size = Math.Round(size) / Math.Pow(10, 2);
		output = size + append;
	}
	if (format == "mb")
	{
		// divide by 1024 twice to get the size in mb
		size = size / 1024 / 1024;
		// multiply by 10 to the power of 2
		size = size * Math.Pow(10, 2);
		// round up/down the new file size, and divide to remove the power and return the correct value
		size = Math.Round(size) / Math.Pow(10, 2);
		output = size + append;
	}
	return output;
}