vb里这句话是什么意思？ @_@

Question

关于红色lt_msg_send_clt 的部分 c#里没见过这种用法啊。。。。orz请问，在c#里该怎么实现段代码 - = 　　Private Declare Function lt_msg_enter_clt Lib "ltws32.dll" (ByVal Host As String, ByVal Service As String, ByVal program As String, ByRef error_no As Integer) As Integer Public Function CF_send(ByVal Buf As String, ByVal Buf_len As Short) As Short error_no = lt_msg_send_clt(m_handle, Buf, CInt(Buf_len)) If error_no <> 0 Then CS_GetWinSockERR() End If CF_send = CShort(error_no) End Function  c#改写vb中，vb完全不会 (┬＿┬) 麻烦大家帮帮忙，谢谢了。。。