明华USBIC卡读卡器读写程序实例

目前，市面上很多的会员卡或者储值卡都是使用了明华USB接口读卡器制作的，在初始化卡信息时，就需要用调用到mwhrf_bj.dll。今天为大家分享，C#下如何调用mwhrf_bj.dll实现卡数据的读写。

C#下调用C++的DLL，需要使用 DLLImport导入：

实现接口

[DllImport("mwhrf_bj.dll", EntryPoint = "Open_USB")]
public static extern int Open_USB();
[DllImport("mwhrf_bj.dll", EntryPoint = "Close_USB", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
public static extern int Close_USB(int icdev);
[DllImport("mwhrf_bj.dll", EntryPoint = "rf_beep", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
public static extern int rf_beep(int icdev, int version);
[DllImport("mwhrf_bj.dll", EntryPoint = "rf_load_key_hex")]
public static extern Int16 rf_load_key_hex(int icdev, int mode, int secnr, string keybuff);
[DllImport("mwhrf_bj.dll")]
public static extern short rf_authentication(int icdev, int _Mode, int _SecNr);
[DllImport("mwhrf_bj.dll")]
public static extern short rf_read(int icdev, int adr, [MarshalAs(UnmanagedType.LPStr)] StringBuilder sdata);
[DllImport("mwhrf_bj.dll")]
public static extern short rf_write(int icdev, int adr, [In] string sdata);
//寻卡
[DllImport("mwhrf_bj.dll", EntryPoint = "rf_card")]
public static extern Int16 rf_card(int icdev, int mode, ref int Snr);
[DllImport("mwhrf_bj.dll", EntryPoint = "rf_load_key", SetLastError = true,
CharSet = CharSet.Auto, ExactSpelling = false,
CallingConvention = CallingConvention.StdCall)]
//说明： 返回设备当前状态
public static extern Int16 rf_load_key(int icdev, int mode, int secnr, [MarshalAs(UnmanagedType.LPArray)]byte[] keybuff);
public int InitIC()
{
return Open_USB();
}
public int Exit(int icdev)
{
return Close_USB(icdev);
}
public int Beep(int icdev, int msec)
{
return rf_beep(icdev, msec);
}
public int load_key(int icdev, int adr, byte[] sdata)
{
return rf_load_key(icdev, 0, adr, sdata);
}
public int Authentication(int icdev, int model, int adr)
{
return rf_authentication(icdev, 0, adr);
}
public int Read(int icdev, int adr, ref StringBuilder sdata)
{
StringBuilder sb = new StringBuilder();
int st = rf_read(icdev, adr, sb);
string str = sb.ToString();
int i = str.IndexOf('A');
string sbstr = "";
if (i > 0)
{
sbstr = str.Substring(0, i);
}
else
{
sbstr = str;
}
StringBuilder sbtmp = new StringBuilder(sbstr);
sdata = sbtmp;
//sdata = sb;
return st;
}
public int Write(int icdev, int adr, string sdata)
{
return rf_write(icdev, adr, sdata);
}
public int IcCard(int icdev, ref int snr)
{
return rf_card(icdev, 1, ref snr);
}

IC接口

/// 初始化
int InitIC();
/// 断开
int Exit(int icdev);
/// 蜂鸣
int Beep(int icdev, int msec);
/// 装载密码
int load_key(int icdev, int adr, byte[] keybuff);
/// 验证密码 返回0为正确
int Authentication(int icdev, int model, int adr);
/// 读卡
int Read(int icdev, int adr,ref StringBuilder sdata);
/// 写卡
int Write(int icdev, int adr, string sdata);
/// 寻卡
int IcCard(int icdev, ref int snr);

调用实例

读卡代码

            icdev = ic.InitIC();
            int snd = -1;
            int st3 = ic.IcCard(icdev, ref snd);
            int st = 0;

            ic.load_key((Int16)icdev, addr, IcPwd());
            st = ic.Authentication((Int16)icdev, 0, addr);

            if (st != 0)
            {
                MessageBox.Show("IC卡无效!");
                ic.Exit(icdev);
                return;
            }

            StringBuilder one = new StringBuilder();
            ic.Read(icdev, addr * 4, ref one);
            StringBuilder two = new StringBuilder();
            ic.Read(icdev, addr * 4 + 1, ref two);
            StringBuilder three = new StringBuilder();
            ic.Read(icdev, addr * 4 + 2, ref three);

            ((TextBox)this.Controls.Find(string.Format("txt{0}Addr1", addr), true)[0]).Text = one.ToString();
            ((TextBox)this.Controls.Find(string.Format("txt{0}Addr2", addr), true)[0]).Text = two.ToString();
            ((TextBox)this.Controls.Find(string.Format("txt{0}Addr3", addr), true)[0]).Text = three.ToString();
           
            ic.Exit(icdev);

写卡代码

            int iResult1 = 0, iResult2 = 0, iResult3 = 0;
            icdev = ic.InitIC();
            int snd = -1;
            int st3 = ic.IcCard(icdev, ref snd);
            int st = 0;
            ic.load_key((Int16)icdev, addr, IcPwd());
            st = ic.Authentication((Int16)icdev, 0, addr);
            if (st != 0)
            {
                MessageBox.Show("IC卡无效!");
                ic.Exit(icdev);
                return;
            }
            byte[] buff = new byte[32];
            byte[] databuff = new byte[16];
            string data = this.txtNewPass.Text.Trim() + "FF078069FFFFFFFFFFFF";
            buff = Encoding.ASCII.GetBytes(data);
            int kadr = addr * 4 + 3;
            common.a_hex(buff, databuff, 32);
            st = (int)mifareone.rf_write_hex(this.icdev, kadr, buff);
            string one = "", two = "", three = "";
            one = ((TextBox)this.Controls.Find(string.Format("txt{0}Addr1", addr), true)[0]).Text.Trim();
            two = ((TextBox)this.Controls.Find(string.Format("txt{0}Addr2", addr), true)[0]).Text.Trim();
            three = ((TextBox)this.Controls.Find(string.Format("txt{0}Addr3", addr), true)[0]).Text.Trim();
            iResult1 = ic.Write(this.icdev, addr * 4, one); 
            iResult2 = ic.Write(this.icdev, addr * 4 + 1, two); 
            iResult3 = ic.Write(this.icdev, addr * 4 + 2, three); 
            if (iResult1 == 0 && iResult2 == 0 && iResult3 == 0)
            {
                ic.Beep(this.icdev, 20);
            }
            ic.Exit(icdev);