我昨天发布了关于如何将 C 程序转换为 C# 作为我在这里的第一个 C# 项目的文章：从 C 转换为 C#，还是制作 DLL？。我已经取得了很大的进步，但我被困在一个部分。我不确定我应该如何重新创建这个无符号的字符数组
C 代码：
unsigned char state_buf[5125];
//--------------------------------------------------------------------------
// Main of iSerial64
//
void main(int argc, char **argv)
{
char refresh,buf[200];
short flag,i,didsetup=0;
short ROM[9];
short PortNum,PortType;
long SHandle;
char serialtmp[2], serial[10][17];
int j = -1;
....
这是 C# 中的函数，它使用 PInvoke http://files.maximintegrated.com/sia_bu/licensed/docs/1-wire_sdk_win/TMEX/romm1rxq.html 获取state_buf
我用来从 API 导入函数的 C# 代码：
[DllImport("IBFS64.dll")]
public static extern short TMRom(
int session_handle,
byte state_buf,
[MarshalAs(UnmanagedType.LPStr)]StringBuilder ROM
);
我看到字节是 C# 等效的，但我不完全确定如何使用它。
到目前为止，你们一直非常有帮助，我对我在这方面取得的进展感到非常满意。
这是我从昨天开始在 C# 中完成的工作：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
namespace PInvokeTest {
class Program {
static void Main(string[] args)
{
int session_handle = 0;
int result = 0;
int flag = 0;
int didsetup = 0;
int defPort = 0;
int i = 0, j = -1;
short type_test = 0;
byte state_buf = 0;
short port_num = 0, port_type = 1;
StringBuilder ID_buf = new StringBuilder();
StringBuilder serial = new StringBuilder();
StringBuilder serialtmp = new StringBuilder();
StringBuilder ROM = new StringBuilder();
//result = TMSearch(session_handle, state_buffer, 1, 1, 0xEC);
defPort = TMReadDefaultPort(out port_num,out port_type);
if (defPort == 1)
{
Console.Write("Default Device: ");
switch (port_type)
{
case 1:
Console.Write("DS9097E serial adapter ");
break;
case 2:
Console.Write("Parallel adapter ");
break;
case 5:
Console.Write("DS90907U serial adapter ");
break;
case 6:
Console.Write("DS9490 USB adapter ");
break;
}
Console.Write("on port # {0}", port_num);
}
else
Console.Write("No Device found");
// get the TMEX driver version
Get_Version(ID_buf);
Console.WriteLine("nDriver: {0}", ID_buf);
type_test = TMGetTypeVersion(port_type, ID_buf);
if (type_test < 0)
{
Console.WriteLine("nNo Hardware Driver for this type found!n");
Console.Write("Press any key to exit");
Console.ReadKey();
Environment.Exit(0);
}
else
Console.WriteLine("Driver Found");
// check for valid range of PortNum
if ((port_num < 1) || (port_num > 15))
{
Console.WriteLine("ERROR, invalid port requested: {0}n", port_num);
Console.Write("Press any key to exit");
Console.ReadKey();
Environment.Exit(0);
}
do
{
// get a session handle to the requested port
session_handle = TMExtendedStartSession(port_num, port_type, IntPtr.Zero);
if (session_handle > 0)
{
// check to see if TMSetup has been done once
if (didsetup == 0)
{
flag = TMSetup(session_handle);
if (flag == 1 || flag == 2)
{
Console.Write("TMSetup complete {0}", flag);
didsetup = 1;
}
else
{
Console.Write("ERROR doing setup {0}", flag);
break;
}
}
else
{
//j was added to keep track of the serial number strings
j++;
//memset(serial[j], 0, strlen(serial[j]));
flag = TMNext(session_handle, state_buf);
if (flag > 0)
{
//ROM[0] = 0;
flag = TMRom(session_handle, state_buf, ROM);
for (i = 7; i >= 0; i--)
{
//This section was changed from the original
//copies raw number into string
//sprintf(serialtmp, "%02X", ROM[i]);
//strcat(serial[j], serialtmp);
}
Console.WriteLine("{0} n", serial[j]);
}
else
Console.WriteLine("end of searchn");
}
// close the opened session
TMEndSession(session_handle);
}
}
while (flag > 0);
Console.ReadKey();
}
[DllImport("IBFS64.dll")]
public static extern int TMExtendedStartSession(
short PortNum,
short PortType,
IntPtr EnhancedOptions
);
[DllImport("IBFS64.dll")]
public static extern short TMSearch(
int session_handle,
byte state_buffer,
short p1,
short p2,
short p3
);
[DllImport("IBFS64.dll")]
public static extern short TMReadDefaultPort(
out short port_num,
out short port_type
);
[DllImport("IBFS64.dll")]
public static extern short Get_Version(
[MarshalAs(UnmanagedType.LPStr)]StringBuilder ID_buf
);
[DllImport("IBFS64.dll")]
public static extern short TMGetTypeVersion(
short port_type,
[MarshalAs(UnmanagedType.LPStr)]StringBuilder ID_buf
);
[DllImport("IBFS64.dll")]
public static extern short TMSetup(
int session_handle
);
[DllImport("IBFS64.dll")]
public static extern short TMNext(
int session_handle,
byte state_buf
);
[DllImport("IBFS64.dll")]
public static extern short TMRom(
int session_handle,
byte state_buf,
[MarshalAs(UnmanagedType.LPStr)]StringBuilder ROM
);
[DllImport("IBFS64.dll")]
public static extern short TMEndSession(
int session_handle
);
}
}
如果有什么我应该改变的，请告诉我。我感谢您的帮助！
对于 C 语言数组：
unsigned char state_buf[5125] ;
尝试使用 C#
byte[] state_buf = new byte[5125] ;
byte 是一个无符号的 8 位数字，域为 0-255。如果要对八位字节进行签名，请使用sbyte（域 -128 到 +127）。