byte[] to ArrayList

[Rick van Woudenberg]

Dear all, I'm stuck once again and calling on you for aid. I want to convert a byte array to an arraylist. I managed to write some code that will put my byte[] data in a file :

            Byte\[\] result = (Byte\[\])foundRows\[0\]\["bin\_file"\];
            using (BinaryWriter binWriter = new BinaryWriter(File.Open("@C:\\test.txt", FileMode.Create)))
            {
                binWriter.Write(result);
            }

This works fine but I would like to write it to an ArrayList so I can process it from there. Reading it back from the file into an ArrayList seems unlogical for me and unneccesary too.

            ArrayList list = new ArrayList();
            StreamReader se = new StreamReader("@C:\\test.txt");
            string line = se.ReadLine();
            while (line != null)
            {
                list.Add(line);
                //Read the next line
                line = se.ReadLine();
            }

            se.Close();

Can somebody point me in the right direction on how to tackle this problem ? With other words, how can I put my byte[] data directly into an ArrayList. Kind regards, Rick

[Simon P Stevens]

Arraylists are a bit old fasioned these days. You should be using some form of generic list instead. 2 easy ways.

        byte\[\] byteArray = new byte\[5\];

        List<byte> byteList1 = byteArray.ToList();
        List<byte> byteList2 = new List<byte>(byteArray);

1. In .net 3.5, there is a ToList() extension method on arrays. 2) One of the constructor for List<> takes an array.

Simon

[N a v a n e e t h]

You have an array and need to represent it in a ArrayList. Right ? You can use List<T>.

byte[] yourArray = ...;
List<byte> list = new List<byte>(yourArray);

This will insert all the array elements to the list. To get items, you can iterate items on the list.

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