请问如何把下列的 C 语言代码转化为 C# 代码, 谢谢了,

Question

        //[StructLayout(LayoutKind.Sequential)]
        [Serializable]
        public struct RECORD
        {
            public long date;
            public long open;
            public long hight;
            public long low;
            public long close;
            public long travl;
            public long traca;
            [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
            public byte[] unuse;
        }
        RECORD reco;
        private void button3_Click(object sender, EventArgs e)
        {
            string file = "0000001.day";
            if (File.Exists(file))
            {
                FileStream fs = File.Open(file, FileMode.Open);
                readdrec(fs);
                fs.Close();
            }
            else
            {
                //printf(_T("Error..............."));
            }
        }
        int readdrec(FileStream fs)
        {
            float fn;
            unsafe
            {
                //int sizetoread = sizeof(RECORD);
                //byte[] buffer = new byte[sizetoread];
                //fs.Read(buffer, 0, sizetoread);
                try
                {
                    BinaryFormatter bf = new BinaryFormatter();
                    reco = (RECORD)bf.Deserialize(fs);
                    fn = ((float)reco.open)/1000;
                    MessageBox.Show(fs.ToString());
                    //......等等
                }
                catch (Exception) { }            }
            return 0;
        }

Answer 1

c++ long --->c# int