YATA.Sett.button3_Click C# (CSharp) Method

        private void button3_Click(object sender, EventArgs e)
        {
            SaveFileDialog sv = new SaveFileDialog();
            sv.Filter = "Color data|*.col";
            if (sv.ShowDialog() == DialogResult.OK)
            {
                List<byte> data = new List<byte>();
                for (int i = 0; i < cols.Length; i++)
                {
                    data.AddRange(cols[i]);
                }
                System.IO.File.WriteAllBytes(sv.FileName, data.ToArray());
            }
        }