Question

经过几次尝试，我无法让StreamWriter构建/工作，因此我做了一些根本错误的事情（C＃，Visual Studio）

我有一个现有的TCP客户端连接并充当读卡器，这是无故障的工作 -

private System.Net.Sockets.NetworkStream ns;
        private System.IO.StreamReader sr;
        private string strIP;
        private string strPort;
        public System.Net.Sockets.TcpClient tc;

        public Socketclient(Reader.Search objSearch)
        {
            m_search = objSearch;
        }

        public void EthernetConnection()
        {
            try
            {
                bool flag = !System.IO.File.Exists(System.Windows.Forms.Application.StartupPath + "\\IPAddress.txt");
                if (!flag)
                {
                    System.IO.TextReader textReader = System.IO.File.OpenText(System.Windows.Forms.Application.StartupPath + "\\IPAddress.txt");
                    string s = textReader.ReadLine();
                    textReader.Close();
                    char[] chArr = new char[] { ';' };
                    string[] sArr = s.Split(chArr);
                    strPort = sArr[0];
                    strIP = sArr[1];
                    flag = strIP == System.String.Empty || strPort == System.String.Empty;
                    if (!flag)
                    {
                        int i = System.Convert.ToInt16(strPort);
                        tc = new System.Net.Sockets.TcpClient(strIP, i);
                        flag = !tc.Connected;
                        if (!flag)
                        {
                            ns = tc.GetStream();
                            sr = new System.IO.StreamReader(ns);
                            m_search.threadClient = new System.Threading.Thread(new System.Threading.ThreadStart(ReceiveData));
                            m_search.threadClient.Priority = System.Threading.ThreadPriority.Lowest;
                            m_search.threadClient.Name = "Ethernet Thread";


   }

然后我想添加（在另一个.cs，它是同一个应用程序的一部分）一个StreamWriter线程，将一些字符写回到同一个端口，然后关闭StreamWriter线程（让读者继续运行） -

private System.IO.StreamWriter sw;

string line = "TH1/r/n";
using (StreamWriter sw = new StreamWriter(ns));
sw.WriteLine(line);
sw.Flush();
sw.Close();

以某种方式（我认为）需要参考

ns = tc.GetStream();

任何人都赞赏

此致活性

Answer 1

已经多次询问过这类问题。

Receving and sending data in C#

上面的示例简要介绍和过去显示数据的发送

using(TcpClient tcpClient = new TcpClient("ADDRESS"))
{
    NetworkStream networkStream = tcpClient.GetStream();
    using(StreamWriter streamWriter = new StreamWriter(networkStream))
    {
        streamWriter.WriteLine(data);
    }
}

Answer 2

问题是StreamWriter周围的使用块，删除它允许底层流继续。

正确使用StreamWriter

2 个答案: