I have a List that I'm converting to a byte[] like so:
List<int> integerList = new List<int>();
integerList.Add(1);
integerList.Add(2);
integerList.Add(3);
byte[] bytes = integerList.SelectMany(BitConverter.GetBytes).ToArray();
How do I convert this back to a List?
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One of the many ways to do it (a LINQ one):
var originalList = Enumerable.Range(0, bytes.Length / 4)
.Select(i => BitConverter.ToInt32(bytes, i * 4))
.ToList();
Minor update:
You can also write a handy generic version of this (just in case you'll need to work with other types):
static List<T> ToListOf<T>(byte[] array, Func<byte[], int, T> bitConverter)
{
var size = Marshal.SizeOf(typeof(T));
return Enumerable.Range(0, array.Length / size)
.Select(i => bitConverter(array, i * size))
.ToList();
}
Usage:
var originalList = ToListOf<int>(bytes, BitConverter.ToInt32);
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