如何在 C# 中使用 zKemKeeper 连接考勤打孔机

我正在使用 asp.net c#开发考勤软件，当我尝试使用 asp.net C#连接生物识别设备（考勤打孔机）时，它显示错误

错误："试图读取或写入受保护的内存。这通常表明其他内存已损坏。

我的代码：

//internal Axzkemkeeper.AxCZKEM AxCZKEM1;
    //public Axzkemkeeper.AxCZKEM axCZKEM1 = new Axzkemkeeper.AxCZKEM();
    //public zkemkeeper.CZKEM axCZKEM1 = new zkemkeeper.CZKEM();
    //public delegate int DecompressMCX(int hComp,IntPtr in, uint in_len, IntPtr out, ref uint out_len, bool eod);
    public zkemkeeper.CZKEM axCZKEM1 = new zkemkeeper.CZKEM();
private void Essl_Connect(string IpAddress, int MachineNo)
    {
        try
        {
            bConn = axCZKEM1.Connect_Net(IpAddress.Trim(), 8080);
            //bConn = axCZKEM1.Connect_Net(IpAddress.Trim(), 4370);
            if (bConn == true)
            {
                ScriptManager.RegisterStartupScript(this, GetType(), "Message", "alert('Connected')", true);
            }
            else
            {
                ScriptManager.RegisterStartupScript(this, GetType(), "Message", "alert('Not Connected')", true);
            }
        }
        catch (Exception ex)
        {
            ScriptManager.RegisterStartupScript(this, GetType(), "Error Message", "alert('" + ex.Message.ToString() + "')", true);
        }
    }

任何人都可以纠正这个问题，有没有其他方法来连接机器?..

如果 IAM 使用

公共zkemkeeper。CZKEMClass axCZKEM1 = new zkemkeeper.CZKEMClass（）;

它显示以下错误：

"互操作类型'zkemkeeper。CZKEMClass'不能嵌入。请改用适用的接口。

更改（在属性中）该 dll interop.zkemkeeper，将类型嵌入为 False。

确保注册表正确的 dll 文件 x64/x32
将此代码添加到创建类的代码顶部

[SecurityPermission（SecurityAction.Assert， Unrestricted = true）]

     public static CZKEM axCZKEM1 = new CZKEM();
    private static bool bIsConnected;
    private static int iMachineNumber;
    public static bool ConnectDevice(string IP,int Port)
    {
        int idwErrorCode=0;
        try
        {
            bIsConnected = axCZKEM1.Connect_Net(IP.Trim(),Port);
            if (bIsConnected)
            {
                iMachineNumber = 1; //In fact,when you are using the tcp/ip communication,this parameter will be ignored,that is any integer will all right.Here we use 1.
                axCZKEM1.EnableDevice(iMachineNumber, false);
                axCZKEM1.RegEvent(iMachineNumber, 65535); //
                return true;
            }
            else
            {
                axCZKEM1.GetLastError(idwErrorCode);
                new Exception($"Error : Unable to connect the device, ErrorCode =  {idwErrorCode}");
                return false;
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }
    public static bool DisconnectDevice()
    {
        try
        {
            axCZKEM1.Disconnect();
            return true;
        }
        catch (Exception ex)
        {
            throw ex;
        }

使用 C#.NET 将生物识别考勤机与 .NET 连接。现在在连接按钮的单击事件上编写下面的代码。

首先声明连接对象：

public zkemkeeper.CZKEM axCZKEM1 = new zkemkeeper.CZKEM();
private void btnconnect_Click(object sender, EventArgs e)
{
    try
    {
        bool bIsConnected = axCZKEM1.Connect_Net(ip_address_of_your_machine, 4370);   // 4370 is port no of attendance machine
        if (bIsConnected == true)
        {
            MessageBox.Show("Device Connected Successfully");
        }
        else
        {
            MessageBox.Show("Device Not Connect");
        }
    }
    Catch( (Exception ex)
    {
        MessageBox.Show(ex.Message.ToString());
    }
}

使用 C#.NET 从数据库中的生物识别考勤机下载考勤日志。

在下载出席按钮的点击事件中编写以下代码：

private bool IsRead = false;
string dwEnrollNumber;
int dwVerifyMode, dwInOutMode, dwYear, dwMonth, dwDay, dwHour, dwMinute, dwSecond,           dwWorkcode, dwMachineNumber;
public zkemkeeper.CZKEM axCZKEM1 = new zkemkeeper.CZKEM();
public class ClsMachineBL
{
    public String DownloadDataFromBiomatrix(ClsMachineML prp)
    {
        try
        {
            string constr = CommonConnection.ConStr;
            con = new SqlConnection(constr);
            con.Open();
            cmd = new SqlCommand("Prc_InsertDatafromBiomatrix", con);
            cmd.CommandType = CommandType.StoredProcedure;
            SqlDataAdapter da = new SqlDataAdapter(cmd);
            cmd.Parameters.AddWithValue("@dwMachineNumber", prp.dwMachineNumber);
            cmd.Parameters.AddWithValue("@dwEnrollNumber", prp.dwEnrollNumber);
            cmd.Parameters.AddWithValue("@dwVerifyMode", prp.dwVerifyMode);
            cmd.Parameters.AddWithValue("@dwInOutMode", prp.dwInOutMode);
            cmd.Parameters.AddWithValue("@dwYear", prp.dwYear);
            cmd.Parameters.AddWithValue("@dwMonth", prp.dwMonth);
            cmd.Parameters.AddWithValue("@dwDay", prp.dwDay);
            cmd.Parameters.AddWithValue("@dwHour", prp.dwHour);
            cmd.Parameters.AddWithValue("@dwMinute", prp.dwMinute);
            cmd.Parameters.AddWithValue("@dwSecond", prp.dwSecond);
            cmd.Parameters.AddWithValue("@dwWorkcode", prp.dwWorkcode);
            cmd.ExecuteNonQuery();
        }
        catch (Exception ex)
        {
            BL.clsCommon objerr = new BL.clsCommon();
            objerr.InesrtError("Error IS " + ex.Message + "_" + ex.StackTrace);
        }
        finally
        {
            cmd.Dispose();
            con.Close();
            con.Dispose();
        }
        return result;
    }
}
public class ClsMachineML
{
    public string Id { get; set; }
    public string MachineNo { get; set; }
    public string MachineIP { get; set; }
    public string PortNo { get; set; }
    public string Remark { get; set; }
    public string Tuser { get; set; }
    public string Tdate { get; set; }
    public string Status { get; set; }
    public int  dwMachineNumber { get; set; }
    public string dwEnrollNumber { get; set; }
    public int dwVerifyMode { get; set; }
    public int dwInOutMode { get; set; }
    public int dwYear { get; set; }
    public int dwMonth { get; set; }
    public int dwDay { get; set; }
    public int dwHour { get; set; }
    public int dwMinute { get; set; }
    public int dwSecond { get; set; }
    public int dwWorkcode { get; set; }
    public string User_Id { get; set; }
    public string Name { get; set; }
    public int Finger_Index { get; set; }
    public string Finger_Image { get; set; }
    public int Privilege { get; set; }
    public string Passwords { get; set; }
    public bool Enabled { get; set; }
    public int Flag { get; set; }
    public string  Fromdate { get; set; }
    public string Todate { get; set; }
}
private void btndownload_Click(object sender, EventArgs e)
{
     ClsMachineBL obj = new ClsMachineBL();
     ClsMachineML prp = new ClsMachineML();
    try
    {
        if (cbmachine.Text == "" || cbmachine.Text == "Select")
        {
            MessageBox.Show("Please Select Machine");
            cbmachine.Focus();
            return;
        }
        progressBar1.Visible = true;
          bool bIsConnected = axCZKEM1.Connect_Net(ip_address_of_your_machine, 4370);   // 4370 is port no of attendance machine
        if (bIsConnected == true)
        {
            IsRead = axCZKEM1.ReadGeneralLogData(dwMachineNumber);
            if (IsRead == true)
            {
                progressBar1.Maximum = 100;
                progressBar1.Step = 1;
                progressBar1.Value = 0;
                while (axCZKEM1.SSR_GetGeneralLogData(dwMachineNumber, out dwEnrollNumber, out dwVerifyMode, out dwInOutMode, out dwYear, out                                dwMonth, out dwDay, out dwHour, out dwMinute, out dwSecond, ref dwWorkcode))
                {
                    prp.dwDay = dwDay;
                    prp.dwEnrollNumber = dwEnrollNumber;
                    prp.dwHour = dwHour;
                    prp.dwInOutMode = dwInOutMode;
                    prp.dwMachineNumber = dwMachineNumber;
                    prp.dwMinute = dwMinute;
                    prp.dwMonth = dwMonth;
                    prp.dwSecond = dwSecond;
                    prp.dwVerifyMode = dwVerifyMode;
                    prp.dwWorkcode = dwWorkcode;
                    prp.dwYear = dwYear;
                    string add = obj.DownloadDataFromBiomatrix(prp);
                    progressBar1.PerformStep();
                }
                string export = obj.ExportToAttendance(prp);
                MessageBox.Show("Attendance Downloaded Successfully");
                progressBar1.Visible = false;
            }
            else
            {
                MessageBox.Show("No Log Found....");
                progressBar1.Visible = false;
            }
        }
        else
        {
            MessageBox.Show("Device Not Connected");
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message.ToString());
    }
}

使用 C#.NET 从数据库中的生物识别考勤机中删除考勤日志。

public zkemkeeper.CZKEM axCZKEM1 = new zkemkeeper.CZKEM();
private void btndownload_Click(object sender, EventArgs e)
{
    bool bIsConnected = axCZKEM1.Connect_Net(ip_address_of_your_machine, 4370);   // 4370 is port no of attendance machine
    if (bIsConnected == true)
    {
        bool delete = axCZKEM1.ClearGLog(dwMachineNumber);
        if (delete == true)
        {
            MessageBox.Show("Deleted.....");
        }
        if (delete == false)
        {
            MessageBox.Show("No Log Found To Delete.....");
        }
    }
}

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