C# 在表单的按钮单击时调用方法

Question

I've been trying to do this all day and I don't see any helpful resources to resolve this issue.

I want to call Server() in the MyTcpListener class from the Dashboard form when a button is clicked.

Thanks in advance.

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Csearch
{
    class MyTcpListener
    {
        public static void Server()
        {
            TcpListener server = null;
            try
            {
                // Set the TcpListener on port 13000.
                Int32 port = 13000;
                IPAddress localAddr = IPAddress.Parse("127.0.0.1");

                // TcpListener server = new TcpListener(port);
                server = new TcpListener(localAddr, port);

                // Start listening for client requests.
                server.Start();

                // Buffer for reading data
                Byte[] bytes = new Byte[256];
                String data = null;

                // Enter the listening loop.
                while (true)
                {
                    Console.Write("Waiting for a connection... ");

                    // Perform a blocking call to accept requests.
                    // You could also use server.AcceptSocket() here.
                    TcpClient client = server.AcceptTcpClient();
                    Console.WriteLine("Connected!");

                    data = null;

                    // Get a stream object for reading and writing
                    NetworkStream stream = client.GetStream();

                    int i;

                    // Loop to receive all the data sent by the client.
                    while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        // Translate data bytes to a ASCII string.
                        data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
                        Console.WriteLine("Received: {0}", data);

                        // Process the data sent by the client.
                        data = data.ToUpper();

                        byte[] msg = System.Text.Encoding.ASCII.GetBytes(data);

                        // Send back a response.
                        stream.Write(msg, 0, msg.Length);
                        Console.WriteLine("Sent: {0}", data);
                    }

                    // Shutdown and end connection
                    client.Close();
                }
            }
            catch (SocketException e)
            {
                Console.WriteLine("SocketException: {0}", e);
            }
            finally
            {
                // Stop listening for new clients.
                server.Stop();
            }

            Console.WriteLine("\nHit enter to continue...");
            Console.Read();
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Csearch;

namespace Csearch
{

    
    public partial class Dashboard : Form
    {
        public Dashboard()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        // Server Start
        private void button1_Click(object sender, EventArgs e)
        {
            
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        { 

        }
        // Client Start
        private void button1_Click_1(object sender, EventArgs e)
        {
            Console.WriteLine("This is the start of something very great");
             
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }

        private void richTextBox1_TextChanged(object sender, EventArgs e)
        {
            

        }
    }
}

Answer 1

Since you have defined Server as a static method in MyTcpListener , you can call it directly like followed.

private void button1_Click(object sender, EventArgs e)
{
    MyTcpListener.Server();
}

Answer 2

Make your class as public static

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;

namespace Csearch
{
    public static class MyTcpListener
    {
        public static void Server()
        {
            TcpListener server = null;
            try
            {
                // Set the TcpListener on port 13000.
                Int32 port = 13000;
                IPAddress localAddr = IPAddress.Parse("127.0.0.1");

                // TcpListener server = new TcpListener(port);
                server = new TcpListener(localAddr, port);

                // Start listening for client requests.
                server.Start();

                // Buffer for reading data
                Byte[] bytes = new Byte[256];
                String data = null;

                // Enter the listening loop.
                while (true)
                {
                    Console.Write("Waiting for a connection... ");

                    // Perform a blocking call to accept requests.
                    // You could also use server.AcceptSocket() here.
                    TcpClient client = server.AcceptTcpClient();
                    Console.WriteLine("Connected!");

                    data = null;

                    // Get a stream object for reading and writing
                    NetworkStream stream = client.GetStream();

                    int i;

                    // Loop to receive all the data sent by the client.
                    while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                    {
                        // Translate data bytes to a ASCII string.
                        data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
                        Console.WriteLine("Received: {0}", data);

                        // Process the data sent by the client.
                        data = data.ToUpper();

                        byte[] msg = System.Text.Encoding.ASCII.GetBytes(data);

                        // Send back a response.
                        stream.Write(msg, 0, msg.Length);
                        Console.WriteLine("Sent: {0}", data);
                    }

                    // Shutdown and end connection
                    client.Close();
                }
            }
            catch (SocketException e)
            {
                Console.WriteLine("SocketException: {0}", e);
            }
            finally
            {
                // Stop listening for new clients.
                server.Stop();
            }

            Console.WriteLine("\nHit enter to continue...");
            Console.Read();
        }
    }
}

Answer 3

Your class and method should be public and static like this. So that you can use it without creating an instance of the class and call it directly.

public static class MyTcpListener
{
    public static void Server()
    {

Answer 4

You just need changing your class ( MyTcpListener ) to the public and then call your method as below:

   namespace Csearch
   {
        public class MyTcpListener
        {
            public static void Server()
            {
             //......
            }
        }
    }
    ---------------------------------
    namespace Csearch
    { 
        public partial class Dashboard : Form
        {
            public Dashboard()
            {
                InitializeComponent();
            }
            // Server Start
            private void button1_Click(object sender, EventArgs e)
            {
                MyTcpListener.Server();
            }
        }