Question

In C# how can I serialize a List<int> to a byte[] in order to store it in a DB field?

I know how to serialize to a file on the disk, but how do I just serialize to a variable?

Here is how I serialized to the disk:

            List<int> l = IenumerableofInts.ToList();
            Stream s = File.OpenWrite("file.bin");
            BinaryFormatter bf = new BinaryFormatter();
            bf.Serialize(s, lR);
            s.Close();

I’m sure it’s much the same but I just can’t wrap my head around it.

Answer 1

Use a MemoryStream instead of the file stream:

Stream s = new MemoryStream();

This will place the data in the s variable, which you can read later on in your application.

In order to read from it, you will need to set the Position to 0, so seeking will start from the beginning of the stream (if reading in chunks), or use ToArray() on it to retrieve the complete content.