While循環不從WPF（C＃）

Question

由用戶給定的信號分斷我有一個WPF，其執行用於串行通信的GUI。我想繼續觸發設備並重新設定值，直到用戶說停止。我有一個全局布爾變量STOP我設置爲false，當用戶按下這又應終止while循環，其持續不斷地觸發裝置停止，但問題是，一旦用戶選擇whcih運行while循環，WPF的運行按鈕應用程序凍結並且不接受停止按鈕點擊。

能有人給我這裏發生了什麼的想法或對如何不同的方式實現它的任何建議。

這裏是我的代碼

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Windows; 
using System.Windows.Controls; 
using System.Windows.Data; 
using System.Windows.Documents; 
using System.Windows.Input; 
using System.Windows.Media; 
using System.Windows.Media.Imaging; 
using System.Windows.Navigation; 
using System.Windows.Shapes; 
using System.IO.Ports; 
using Keyence.data_class; 
using Microsoft.Win32; 
using System.IO; 
using Keyence; 
using System.Threading; 

namespace Keyence 
{ 
    /// <summary> 
    /// Interaction logic for MainWindow.xaml 
    /// </summary> 
    public partial class MainWindow : Window 
    { 
     public static string filePath; 
     public static string fileName; 
     public static int baudrate = 9600; 
     public static string thresHold = "60"; 
     public bool STOP = true; 
     public static char[] buffer = new char[256]; 
     public static string x, y, match; 
     public static string value; 
     public static SerialPort port = new SerialPort("COM4", baudrate, Parity.None, 8, StopBits.One); 


     public MainWindow() 
     { 

      InitializeComponent(); 

      //port.DataReceived 
      //SerialPort port = new SerialPort(COM, baudrate, Parity.None, 8, StopBits.One); 
      port.Open(); 
      port.NewLine = "\r"; 
      //*******display camera types***** 
      string[] cameraTypes = new string[] { "CVseries100 ", "CVseries500" , "CVseries700" }; 
      foreach (string cam in cameraTypes) 
      { 
       camera_type.Items.Add(cam); 
      } 
      //*******select your trigger mode(default is set to NONE)******* 
      string[] triggerModes = new string[] { "triggerModeNone", "triggerModeDATA", "triggerModeRepeat" }; 
      foreach(string trigger in triggerModes) 
      { 
       trigger_mode.Items.Add(trigger); 
      } 
      //*****put a default value for thresHold******** 
      threshold_value.Text = thresHold; 

      //*******add values to the baudrate dropdown******** 
      baud_rate.Items.Add("9600"); 
      baud_rate.Items.Add("19200"); 
      baud_rate.Items.Add("38400"); 

      port.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived); 

     } 

     public static void port_DataReceived(object sender, SerialDataReceivedEventArgs e) 
     { 
      SerialPort sp = (SerialPort)sender; 
      value = sp.ReadTo("\r"); 
      string[] values = value.Split(new char[] { ',' }); 
      x = values[0]; 
      y = values[1]; 
      match = values[2]; 
     } 

     //public static void get_data() 
     //{ 
     // port.Write("T"); 
     //} 


     #region encapsulates all the individuals functions when the user changes settings (UI interaction functions) 

     private void get_sample_Click(object sender, RoutedEventArgs e) 
     { 
      //write code to read x,y,threshold values in the text boxes 
      port.Write("T"); 
      //MainWindow.get_data(); 
      x_value.Text = string.Format("{0}", x); 
      y_value.Text = string.Format("{0}", y); 
      thresholdvalue.Text = string.Format("{0}", match); 
     } 


     #region the method opens a savefileDialog(dataFile) and lets user save the file in which data is stored 
     public void data_file_Click(object sender, RoutedEventArgs e) 
     { 
      SaveFileDialog dataFile = new SaveFileDialog(); 
      dataFile.DefaultExt = ".txt"; 
      dataFile.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); 
      dataFile.RestoreDirectory = true; 
      dataFile.Title = "select or create a new file"; 
      DateTime currentTime = DateTime.Now; 
      dataFile.Filter = " Text Document |*.txt | Excel |*.xls"; 
      string datepatt = @"M-d-yy_hh-mm_Data"; 
      string saveDT = currentTime.ToString(datepatt); 
      dataFile.FileName = saveDT; 
      Nullable<bool> result = dataFile.ShowDialog(); 
      if (result == true) 
      { 
       filePath = dataFile.FileName; 
       fileName = dataFile.SafeFileName; 
      } 

      System.IO.FileStream fs = (System.IO.FileStream)dataFile.OpenFile(); 
      using (StreamWriter Write = new StreamWriter(fs)) 
      { 
      Write.WriteLine("Wafer Placement Data\n\n"); 
      Write.WriteLine("File Name : {0}\n", fileName); 
      Write.WriteLine("Port Name : COM4\n"); 
      Write.WriteLine("Threshold : {0}\n", threshold_value.Text); 
      Write.WriteLine("Date : {0}\n\n", Convert.ToString(DateTime.Now)); 
      //************Print Header to the file****************** 
      Write.WriteLine("\tX\tY\tcorrelation\tDate\n"); 
      } 
     } 
     #endregion 

     #region function called when the threshold value is changed 
     private void threshold_value_TextChanged(object sender, TextChangedEventArgs e) 
     { 
      thresHold = threshold_value.Text; 
     } 
     #endregion 

     #region function to write individual data points on the window for checking 
     private void writeSample(double X, double Y, double threshold) 
     { 
      FileStream file = new FileStream(filePath, FileMode.Append, FileAccess.ReadWrite); 
      using (StreamWriter Writer = new StreamWriter(file)) 
      { 
       Writer.WriteLine(DateTime.Now); 
       Writer.WriteLine("\t X \t Y\t threshold% "); 
      } 
     } 
     #endregion 


     private void run_button_Click(object sender, RoutedEventArgs e) 
     { 

      do 
      { 

       port.Write("T"); 
       FileStream file = new FileStream(filePath, FileMode.Append, FileAccess.Write); 
       Thread.Sleep(500); 
       using (StreamWriter Writer = new StreamWriter(file)) 
       { 
        Writer.WriteLine("\t{0}\t{1}\t{2}\t{3}", x, y, match, Convert.ToString(DateTime.Now)); 
       } 
       port.DiscardInBuffer(); 
      } while (STOP); 
     } 

     private void stop_button_Click(object sender, RoutedEventArgs e) 
     { 
      STOP = false; 
     } 


     private void command_TextChanged(object sender, TextChangedEventArgs e) 
     { 
      string C = command.Text; 
      port.WriteLine(C); 
     } 
     #endregion 



    } 
} 

Answer 1

您需要在單獨的線程中運行你的串行端口的代碼。在你的實現GUI線程忙於w /串口通信，這就是爲什麼你的窗口被凍結。以下文章準確地解釋了您需要的內容： http://www.ryanvice.net/wpf-3-5/using-backgroundworker-with-wpf/