C#调用dll文件 跪求L
文件一共有三个：dcrf32.dll、dcrf32.h、dcrf32.lib
如果是VC++的人员编程的话就把dcrf32.lib加入到工程>设置 链接功能块就行了，他们就可以编其他功能了
可是小弟我只会编VC#。
下面是一些代码，我来请教各位大侠、高手们！！！
头文件dcrf32.h里：
#define uc unsigned char
extern "C"
{
//1.
HANDLE __stdcall dc_init(__int16 port,long baud);//链接串口
//2.
__int16 __stdcall dc_exit(HANDLE icdev);
//3.
__int16 __stdcall dc_config(HANDLE icdev,unsigned char _Mode,unsigned char _Baud);
... ...
解释一下：int dc_init(int port,long baud);
功 能：初始化通讯口
参 数：port：取值为0～19时，表示串口1～20；为100时，表示USB口通讯，此时波特率无效。
baud：为通讯波特率9600～115200
返 回：成功则返回串口标识符>0，失败返回负值，见错误代码表
例：int icdev;
icdev=dc_init(0,9600);//初始化串口1，波特率9600
----------------------------------------------------
dcrf32.dll文件没打开过。
我用C#调用，用以下方发会出现异常（“试图加载格式不正确的程序。 (异常来自 HRESULT:0x8007000B)”）。但开始没有语法错误的
[DllImport("dcrf32.dll")]
public static extern IntPtr dc_init(int port, long baud);
private void button1_Click(object sender, EventArgs e)
{
IntPtr re = dc_init(100, 0);//按按钮“链接串口”的时候出错了<-这句出错：试图加载格式不正确的程序。
}
请大家指教。
[解决办法]
int16就是int16，c语言的int和long都是int32
c#的long好像是int64了吧
[解决办法]
public static extern IntPtr dc_init(int port, long baud);
上面是_int16这里用int肯定不对,用short port试试
[解决办法]
extern "C"
{
//1.
HANDLE __stdcall dc_init(__int16 port,long baud);//链接串口
//2.
__int16 __stdcall dc_exit(HANDLE icdev);
//3.
__int16 __stdcall dc_config(HANDLE icdev,unsigned char _Mode,unsigned char _Baud);
... ...
解释一下：int dc_init(int port,long baud);
_int16 = short
unsigned char = byte
long = int
HANDLE = IntPtr
再试。
记得用GetLastErr()
[解决办法]
[DllImport("dcrf32.dll")]
public static extern IntPtr dc_init(int port, long baud);
应该把long该成int就行
一个参数最少也得4字节，虽然那边要的是__int16，但还是占用4个字节，你传4个字节过去也不会出错
而c语言long要4个字节，c# long是8个字节
[解决办法]
可能程序的32位和服务器的版本可能不一样。
参考
[解决办法]
楼主把dll复制到生成目录里
就是\bin\debug\
[解决办法]
[DllImport("dcrf32.dll")]
然后在方法上加上extern关键字
[解决办法]
//---------------------------------------------
[DllImport("dcrf32.dll", EntryPoint = "dc_init")]
//说明：初始化
public static extern int dc_init(Int16 port, long baud); //初试化
[DllImport("dcrf32.dll", EntryPoint = "dc_exit")]
//说明：关闭读写模块
public static extern short dc_exit(int icdev);
[DllImport("dcrf32.dll", EntryPoint = "dc_reset")]
//说明：重置读写模块一段时间
public static extern short dc_reset(int icdev, uint sec);
[DllImport("dcrf32.dll", EntryPoint = "dc_request")]
//说明：寻卡
public static extern short dc_request(int icdev, char _Mode, ref uint TagType);
[DllImport("dcrf32.dll", EntryPoint = "dc_card")]
//说明：获得卡芯片号
public static extern short dc_card(int icdev, char _Mode, ref ulong Snr);
[DllImport("dcrf32.dll", EntryPoint = "dc_halt")]
//说明：关闭与当前卡的通讯
public static extern int dc_halt(int icdev);
[DllImport("dcrf32.dll", EntryPoint = "dc_anticoll")]
//说明：锁定卡，返回芯片号
public static extern short dc_anticoll(int icdev, char _Bcnt, ref int IcCardNo);
[DllImport("dcrf32.dll", EntryPoint = "dc_beep")]
//说明：蜂鸣
public static extern short dc_beep(int icdev, uint _Msec);
[DllImport("dcrf32.dll")]
//说明：验证密钥
public static extern short dc_authentication(int icdev, Int16 _Mode, Int16 _SecNr);
[DllImport("dcrf32.dll", EntryPoint = "dc_load_key")]
public static extern short dc_load_key(int icdev, int mode, int secnr, [In] byte[] nkey); //密码装载到读写模块中
[DllImport("dcrf32.dll", EntryPoint = "dc_load_key_hex")]
public static extern short dc_load_key_hex(int icdev, int mode, int secnr, string nkey); //密码装载到读写模块中
[DllImport("dcrf32.dll", EntryPoint = "dc_write")]
public static extern short dc_write(int icdev, int adr, [In] byte[] sdata); //向卡中写入数据
[DllImport("dcrf32.dll", EntryPoint = "dc_write")]
public static extern short dc_write(int icdev, int adr, [In] string sdata); //向卡中写入数据
[DllImport("dcrf32.dll", EntryPoint = "dc_write_hex")]
public static extern short dc_write_hex(int icdev, int adr, [In] string sdata); //向卡中写入数据(转换为16进制)
[DllImport("dcrf32.dll", EntryPoint = "dc_read")]
public static extern short dc_read(int icdev, int adr, [Out] byte[] sdata);
[DllImport("dcrf32.dll", EntryPoint = "dc_read")]
public static extern short dc_read(int icdev, int adr, [MarshalAs(UnmanagedType.LPStr)] StringBuilder sdata); //从卡中读数据
[DllImport("dcrf32.dll", EntryPoint = "dc_read_hex")]
public static extern short dc_read_hex(int icdev, int adr, [MarshalAs(UnmanagedType.LPStr)] StringBuilder sdata); //从卡中读数据(转换为16进制)
[DllImport("dcrf32.dll", EntryPoint = "a_hex")]
public static extern int a_hex(string oldValue, ref string newValue, Int16 len); //普通字符转换成十六进制字符
[DllImport("dcrf32.dll", EntryPoint = "hex_a")]
public static extern void hex_a(ref string oldValue, ref string newValue, int len); //十六进制字符转换成普通字符
[DllImport("dcrf32.dll", EntryPoint = "dc_changeb3")]
public static extern short dc_changeb3(int icdev, int _SecNr, byte[] _KeyA, int _B0, int _B1, int _B2, int _B3, int _Bk, byte[] _KeyB); //十六进制字符转换成普通字符
[DllImport("dcrf32.dll", EntryPoint = "dc_select")]
public static extern short dc_select(int icdev, int _Snr, ref uint _Size); //十六进制字符转换成普通字符
楼主你试下吧，这是我以前做的项目里用到的类，我都用过，应该可以的
[解决办法]
