如上所示：
vs2015 显示的错误信息如下
错误 CS1061 “Form1”未包含“Dispatcher”的定义，并且找不到可接受第一个“Form1”类型参数的扩展方法“Dispatcher”(是否缺少 using 指令或程序
集）
代码如下所示：
using System;
using System.IO;
using System.Net.Sockets;
using System.Windows.Forms;
using System.Threading;
namespace Commuicate_With_Plc
{
public partial class Form1 : Form
{
private static NetworkStream clientStream;
public BinaryWriter bw;
public TcpClient chatClient;
public StreamWriter writeStream;
private StreamReader readStream;
//Delegate int DelMath(int a, int b);
public Form1()
{
InitializeComponent();
Thread t = new Thread(WorkThread);
t.IsBackground = true;
t.Start();
}
public void connectCmd()
{
//Connect to the server on the IP and Port
if (clientStream == null)
{
try
{
chatClient = new TcpClient(plcip.Text, Convert.ToInt32(port.Text));
clientStream = chatClient.GetStream();
StreamWriter writeStream = new StreamWriter(clientStream);
StreamReader readStream = new StreamReader(clientStream);
Receive.Text = "建立连接成功";
}
catch(Exception ex)
{
Receive.Text = "建立连接失败";
MessageBox.Show(ex.ToString());
}
}
}
void WorkThread()
{
string receive = null;
while (true)
{
receive = readStream.ReadLine();
this.Dispatcher.Invoke(() => textBox.Text += receive + "\r\n");
// 后台线程停顿1秒
Thread.Sleep(1000);
}
}
private String GetCommand()
{
if (Receive.InvokeRequired)
{
return (String)Receive.Invoke(new Func<String>(() => { return Receive.Text; }));
}
else
{
return Receive.Text;
}
}
private void label1_Click(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
connectCmd();
}
private void plcip_TextChanged(object sender, EventArgs e)
{
}
private void Send_Click(object sender, EventArgs e)
{
string receive = null;
try
{
NetworkStream clientStream = chatClient.GetStream();
StreamWriter writeStream = new StreamWriter(clientStream);
StreamReader readStream = new StreamReader(clientStream);
writeStream.Write(textBox2.Text);
Receive.Text += textBox2.Text + "\r\n";
GetCommand();
// writeStream.WriteLine(cmd);
// writeStream.Flush();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void port_TextChanged(object sender, EventArgs e)
{
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
}
private void Receive_TextChanged(object sender, EventArgs e)
{
}
private void Disconnect_Click(object sender, EventArgs e)
{
if(chatClient!= null)
{
try
{
chatClient.Close();
chatClient = null;
Receive.Text = "断开连接成功！";
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
}
}
}
