Question

我正尝试在VB.NET的热敏打印机上通过以太网进行打印。在互联网上搜索，我找到了这个例程，它显然存储在内存中，因为打印机什么都不做。然后，如果我从控制面板发出测试页面，它会打印我在上面打印的测试页面+测试页面。你在日常生活中错过了什么吗？非常感谢你能给我的帮助。

Dim cImpresion As String = Chr(27) & Chr(77) & Chr(64)
Dim tcpSender As TcpClient = New TcpClient()

tcpSender.SendBufferSize = 4096
tcpSender.Connect(whatIP, whatPort)
If tcpSender.Connected = False Then
  tcpSender.Close()
  Exit Sub
End If

Dim nStream As NetworkStream = tcpSender.GetStream()
If nStream.CanWrite = True Then
  Dim SendBytes As Byte
  SendBytes = System.Text.Encoding.ASCII.GetBytes("the text I want to print")
  nStream.Write(SendBytes, 0, SendBytes.Length)
  nStream.Flush()
End If

nStream.Close()
tcpSender.Close()

Answer 1

尝试将VbCrLf添加到SendBytes：

SendBytes = System.Text.Encoding.ASCII.GetBytes("the text I want to print")
SendBytes = SendBytes + vbCrLf

或者使用nStream.WriteLine而不是nStream.Write

我试图通过以太网在VB.NET中的热敏打印机上打印

1 个答案: