using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, Pack = )]

    public struct Employee

    {

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = )]

        public char[] EmployeeId;

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = )]

        public char[] LastName;

        [MarshalAs(UnmanagedType.ByValArray, SizeConst = )]

        public char[] FirstName;

        //这里省略很多列

     }

10001 Nick                          Yang

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        /// <summary>

        /// Get data from interface file

        /// </summary>

        public void GetDataFromFile()

        {

            try

            {

                string path = ConfigurationManager.ConnectionStrings["DataPath"].ConnectionString;

                if (File.Exists(path))

                {

                    string[] rows = File.ReadAllLines(path, Encoding.UTF8);

                    foreach (string row in rows)

                    {

                        byte[] bytes = Encoding.UTF8.GetBytes(row);

                        //以下为重点代码

                        int size = Marshal.SizeOf(typeof(Employee));

                        IntPtr buffer = Marshal.AllocHGlobal(size);

                        try

                        {

                            Marshal.Copy(bytes, , buffer, size);

                            //此处已经完成转换

                            Employee emp = (Employee)Marshal.PtrToStructure(buffer, typeof(Employee));

                            //省略很多代码

                        }

                        catch (Exception ex)

                        {

                            throw new Exception("Error when Copying bytes from interface to Employee", ex);

                        }

                        finally

                        {

                            Marshal.FreeHGlobal(buffer);

                        }

                    }

                }

                else

                {

                    throw new Exception(string.Format("Error. Can`t not find the interface file at '{0}'", path));

                }

            }

            catch (Exception ex)

            {

                throw new Exception("Error when getting data from interface file.", ex);

            }

        }