作者kevin529123 (蜗牛..)
看板Visual_Basic
标题[.NET] 语法问题
时间Fri Jan 20 09:35:29 2012
请问版上大大,
小弟使用2008VB.NET做通讯连线, 语法如下:
Public Class Form1
Public ModbusASCII1 As New ModbusASCII '
Dim station As Integer = 1 '站号
Dim ech As Integer
Private Sub chkOpenCOM_CheckedChanged(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles chkOpenCOM.CheckedChanged
If chkOpenCOM.Checked = True Then
ech = ModbusASCII1.Open_Comm(ComPort.Text, 9600, "e", 7, 1) '
Else
ModbusASCII1.Close_comm(ComPort.Text)
End If
End Sub
Private Sub ComPort_SelectedIndexChanged(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles ComPort.SelectedIndexChanged
If chkOpenCOM.Checked = True Then
ech = ModbusASCII1.Open_Comm(ComPort.Text, 9600, "e", 7, 1)
Else
ModbusASCII1.Close_comm(ComPort.Text)
End If
End Sub
End Class
编译程式出现时出现:
InvalidOperationException未处理,
是语法错误吗?
谢谢!
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