vb.net 关于语句顺序的问题
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim Ports As String() = SerialPort.GetPortNames() Dim Port As String For Each Port In Ports PortNameBox.Items.Add(Port) Next Port SendBox.Text = "123" Label.Text = PortUsing.IsOpen StatusLabel.Text = "串口未连接" StatusLabel.ForeColor = Color.Red PortNameBox.SelectedIndex = 0 AddHandler PortUsing.DataReceived, AddressOf Sp_DataReceived Port_Using() End Sub
