修复zkemkeeper.dll中的错误代码0“未找到数据或重复数据”

Question

我正在尝试将设备连接到我的C＃.net Windows应用程序。我想连接此设备以从中读取数据并将它们存储到sqlserver数据库中，因此我使用zkemkeeper.dll连接到设备。但是我收到错误。

代码：

if (txtIP.Text.Trim() == "" || txtPort.Text.Trim() == "")
            {
                MessageBox.Show("IP and Port cannot be null", "Error");
                return;
            }
            int idwErrorCode = 0;
            Cursor = Cursors.WaitCursor;
            if (button1.Text == "DisConnect")
            {
                axCZKEM1.Disconnect();
                bIsConnected = false;
                button1.Text = "Connect";
                lblState.Text = "Current State:DisConnected";
                Cursor = Cursors.Default;
                return;
            }
            bIsConnected = axCZKEM1.Connect_Net(txtIP.Text, Convert.ToInt32(txtPort.Text));
            if (bIsConnected == true)
            {
                button1.Text = "DisConnect";
                button1.Refresh();
                lblState.Text = "Current State:Connected";
                iMachineNumber = 1;
                axCZKEM1.RegEvent(iMachineNumber, 65535);
            }
            else
            {
                axCZKEM1.GetLastError(ref idwErrorCode);
                MessageBox.Show("Unable to connect the device,ErrorCode=" + idwErrorCode.ToString(), "Error");
            }
            Cursor = Cursors.Default;
        }

    }

我在此行收到错误代码0“Data not found or data repeated”

 bIsConnected = axCZKEM1.Connect_Net(txtIP.Text, Convert.ToInt32(txtPort.Text));