While循环不从WPF（C＃）

Question

由用户给定的信号分断我有一个WPF，其执行用于串行通信的GUI。我想继续触发设备并重新设定值，直到用户说停止。我有一个全局布尔变量STOP我设置为false，当用户按下这又应终止while循环，其持续不断地触发装置停止，但问题是，一旦用户选择whcih运行while循环，WPF的运行按钮应用程序冻结并且不接受停止按钮点击。

能有人给我这里发生了什么的想法或对如何不同的方式实现它的任何建议。

这里是我的代码

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

您需要在单独的线程中运行你的串行端口的代码。在你的实现GUI线程忙于w /串口通信，这就是为什么你的窗口被冻结。以下文章准确地解释了您需要的内容： http://www.ryanvice.net/wpf-3-5/using-backgroundworker-with-wpf/