c# 调用delphi dll 传结构体参数

Question

哎,一看就知道是弄IC卡的.弄发卡器吧.
TParaBuf=record  
          ComNo:integer;                //串口号  
          Baud:integer;                  //波特率  （一般设为115200）  
          Sys_Sec:array  [1..3]  of  integer;      //系统扇区1,2,3  （一般设为0，1，2）  
          User_Sec:array  [1..3]  of  integer;      //用户扇区1,2,3  （一般设为3，4，5，可以自由设置）  
          AuthorNo:array  [1..6]  of  PChar;结构体对齐就是内存要对齐.它这里使用了默认的DELPHI字节对齐方式,你在定义结构体的时候也要.
按照上面的定义一个C#版本,然后packed = 4就可以了.

Answer 1

我这样定义的，不知对不对
 [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 4)]
        public struct TParaBuf
        {
            [MarshalAs(UnmanagedType.LPStr)]
            public int ComNo;
            [MarshalAs(UnmanagedType.LPStr)]
            public int Baud;
            [MarshalAs(UnmanagedType.LPStr)]
            public int Sys_Sec;
            [MarshalAs(UnmanagedType.LPStr)]
            public int User_Sec;
            [MarshalAs(UnmanagedType.LPStr)]
            public string AuthorNo;        }

Answer 2

我这样定义的，不知对不对
 [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi, Pack = 4)]
        public struct TParaBuf
        {
            [MarshalAs(UnmanagedType.LPStr)]
            public int ComNo;
            [MarshalAs(UnmanagedType.LPStr)]
            public int Baud;
            [MarshalAs(UnmanagedType.LPStr)]
            public int Sys_Sec;
            [MarshalAs(UnmanagedType.LPStr)]
            public int User_Sec;
            [MarshalAs(UnmanagedType.LPStr)]
            public string AuthorNo;        }