Question

vb.net编写的聊天程序怎么不能传送汉字

Answer 1

‘客户端向这样写：在窗体说放两个文本框、两个标签、两个按钮、一个列表框
Imports System.Net
Imports System.Net.Sockets
Imports System.IO
Imports System.Threading

Public Class Form1
'网络基础数据流
Private ns As NetworkStream
Private swriter As StreamWriter
Private nsread As StreamReader
Private tcpclient As TcpClient
Private tcpconnected As Boolean = False
Private clisocket As Socket
Private mythread As Thread

'发送
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

If Me.TextBox2.Text <> "" Then
swriter.WriteLine(Me.TextBox2.Text)
swriter.Flush()
Me.TextBox2.Text = ""

Else
MessageBox.Show("发送信息不能为空！", "错误提示")
End If

End Sub
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)

If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub

'建立连连接
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim ipremote As IPAddress
Dim tcpclient As TcpClient

Try
ipremote = IPAddress.Parse(Me.TextBox1.Text)
Catch ex As Exception
MessageBox.Show("IP地址不合法！", "错误提示")
End Try

Try
tcpclient = New TcpClient(Me.TextBox1.Text, 8000)
ns = tcpclient.GetStream
swriter = New StreamWriter(ns)
Me.StatusBar1.Text = "已经连接上"
Me.Button2.Enabled = False
Me.Button1.Enabled = True
tcpconnected = True
Catch ex As Exception
MessageBox.Show("无法与远程8000端口建立连接！", "错误提示")
End Try
End Sub

Private Sub listen()
Try
Dim tcplistener As New TcpListener(IPAddress.Parse("127.0.0.1"), 8000)
tcplistener.Start()
tcpclient = tcplistener.AcceptTcpClient
ns = tcpclient.GetStream()
nsread = New StreamReader(ns)
While True
Dim msg As String = nsread.ReadLine
If msg = "stop" Then
tcplistener.Stop()
ns.Close()
nsread.Close()
mythread.Abort()
Else
Dim mytime As String = DateTime.Now.ToShortTimeString
Me.ListBox1.Items.Add(mytime + " " + msg)

End If
End While
Catch ex As System.Security.SecurityException
MessageBox.Show("侦听失败！", "错误")

End Try

End Sub
End Class