的serialport錯誤

Question

我有以下代碼：

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

namespace WindowsFormsApplication1 
{ 
    public partial class Form1 : Form 
    { 
     public Form1() 
     { 
      InitializeComponent(); 
     } 
     public class ThreadWork 
     { 
      public static void DoWork() 
      { 
serialPort1 = new SerialPort(); 
       serialPort1.Open(); 
       serialPort1.Write("AT+CMGF=1\r\n"); 
       //Thread.Sleep(500); 
       serialPort1.Write("AT+CNMI=2,2\r\n"); 
       //Thread.Sleep(500); 
       serialPort1.Write("AT+CSCA=\"+4790002100\"\r\n"); 
       //Thread.Sleep(500); 
       serialPort1.DataReceived += serialPort1_DataReceived_1; 
      } 
     } 

     private void Form1_Load(object sender, EventArgs e) 
     { 
      ThreadStart myThreadDelegate = new ThreadStart(ThreadWork.DoWork); 
      Thread myThread = new Thread(myThreadDelegate); 
      myThread.Start(); 
     } 

     private void serialPort1_DataReceived_1(object sender, System.IO.Ports.SerialDataReceivedEventArgs e) 
     { 
      string response = serialPort1.ReadLine(); 
      this.BeginInvoke(new MethodInvoker(() => textBox1.AppendText(response + "\r\n"))); 
     } 
    } 
} 

和所有serialport1線我收到此錯誤：

錯誤1是所必需的非靜態字段，方法的對象引用，或屬性'WindowsFormsApplication1.Form1.serialPort1'C：\ Users \ alexluvsdanielle \ AppData \ Local \ Temporary Projects \ WindowsFormsApplication1 \ Form1.cs 23 17 WindowsFormsApplication1

我在做什麼錯？

Answer 1

這就是說serialPort1不是靜態的，因此不能從DoWork()這個靜態函數中引用。

您必須使serialPort1成爲靜態設計才能運行。這可能意味着將其從表單中取出並在代碼隱藏中聲明它。然後，你必須在Form首次構建時實例化它。

Answer 2

就個人而言，我會刪除類ThreadWork並將DoWork方法移出父類，並從中刪除static修飾符。也就是說，執行以下操作：

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

namespace WindowsFormsApplication1 
{ 
    public partial class Form1 : Form 
    { 
     public Form1() 
     { 
      InitializeComponent(); 
     } 

     public void DoWork() 
     { 
serialPort1 = new SerialPort(); 
      serialPort1.Open(); 
      serialPort1.Write("AT+CMGF=1\r\n"); 
      //Thread.Sleep(500); 
      serialPort1.Write("AT+CNMI=2,2\r\n"); 
      //Thread.Sleep(500); 
      serialPort1.Write("AT+CSCA=\"+4790002100\"\r\n"); 
      //Thread.Sleep(500); 
      serialPort1.DataReceived += serialPort1_DataReceived_1; 
     }   

     private void Form1_Load(object sender, EventArgs e) 
     { 
      ThreadStart myThreadDelegate = new ThreadStart(DoWork); 
      Thread myThread = new Thread(myThreadDelegate); 
      myThread.Start(); 
     } 

     private void serialPort1_DataReceived_1(object sender, System.IO.Ports.SerialDataReceivedEventArgs e) 
     { 
      string response = serialPort1.ReadLine(); 
      this.BeginInvoke(new MethodInvoker(() => textBox1.AppendText(response + "\r\n"))); 
     } 
    } 
} 

這可以讓你離開serialPort1你的窗體設計，仍然使用的線程模型。