主题：[求助]与中控考勤机连接的问题

 连接按钮的代码如下:

Private Sub btnConnect_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnConnect.Click

        If txtIP.Text.Trim() = "" Or txtPort.Text.Trim() = "" Then

            MsgBox("IP and Port cannot be null", MsgBoxStyle.Exclamation, "Error")

            Return

        End If

        Dim idwErrorCode As Integer

        Cursor = Cursors.WaitCursor

        If btnConnect.Text = "Disconnect" Then

            AxCZKEM1.Disconnect()

            bIsConnected = False

            btnConnect.Text = "Connect"

            lblState.Text = "Current State:Disconnected"

            Cursor = Cursors.Default

            Return

        End If

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

        If bIsConnected = True Then

            btnConnect.Text = "Disconnect"

            btnConnect.Refresh()

            lblState.Text = "Current State:Connected"

            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.RegEvent(iMachineNumber, 65535) 'Here you can register the realtime events that you want to be triggered(the parameters 65535 means registering all)

        Else

            AxCZKEM1.GetLastError(idwErrorCode)

            MsgBox("Unable to connect the device,ErrorCode=" & idwErrorCode, MsgBoxStyle.Exclamation, "Error")

        End If

        Cursor = Cursors.Default

   End Sub

我的IP及端口都是正确的,密码是123456应该加在哪里?不然在VS中启动运行代码会出现下面的错误提示: