c# 串口与透明窗体

串口通信

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.VisualBasic;
using Microsoft.VisualBasic.Devices;
using System.Threading;

namespace ComDevices
{
    public partial class Form1 : Form
    {
        System.IO.Ports.SerialPort com = null;
        delegate void HandleInterfaceUpdateDelegate(string text);
        HandleInterfaceUpdateDelegate interfaceUpdateHandle;
        public Form1()
        {
         
            InitializeComponent();
            fun1();
            com = new System.IO.Ports.SerialPort("COM2");
            OpenCom();
            interfaceUpdateHandle = new HandleInterfaceUpdateDelegate(UpdateTextBox); 
            com.DataReceived+=new System.IO.Ports.SerialDataReceivedEventHandler(com_DataReceived);         

        }     
        protected void com_DataReceived(object sender,System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            byte[] readBuffer = new byte[com.BytesToRead];
           com.Read(readBuffer, 0, readBuffer.Length);
            string s ="";
            foreach (byte b in readBuffer)
            {
                s +=  Convert.ToString(b, 2) +" ";
            }
            this.Invoke(interfaceUpdateHandle,s);
            //this.Invoke(interfaceUpdateHandle, new string[] { Encoding.Unicode.GetString(readBuffer) });

            /*string Rec = "";
            while (com.BytesToRead > 0)
            {
                Rec += (char)com.ReadByte();
            }
            this.Invoke(interfaceUpdateHandle, Rec);*/
        }
        public void UpdateTextBox(string text)
        {
            textBox2.Text += text;
        }     
  

        //获取串口信息
        public void fun1()
        {
            string[] str = System.IO.Ports.SerialPort.GetPortNames();
            foreach (string s in str)
            {
                listBox1.Items.Add(s);
            }
        }
        //打开串口
        public void OpenCom()
        {
            com.ReceivedBytesThreshold = 1;
            if (!com.IsOpen)
            {
                com.Open();
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            com.WriteLine(this.textBox1.Text);
        }

        //读取缓冲区，
        private void button2_Click(object sender, EventArgs e)
        {
            int count = com.ReadBufferSize;      
            byte[] buffer = new byte[count];
            if (com.BytesToRead > 0)
            {
                com.Read(buffer, 0, count);
                string s = System.Text.Encoding.ASCII.GetString(buffer);
                textBox2.Text += s;
            }   
        } 

        ~Form1()
        {
       
            com.Close();
        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
          
        }
    }
}

 

透明窗体

 

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

namespace ComDevices
{
    public partial class Transparent : Form
    {
        public Transparent()
        {
            InitializeComponent();
            this.Location = new Point(100, 100);
            this.Cursor = Cursors.Hand;
            this.Text = "透明窗体测试程序";
            this.StartPosition = FormStartPosition.CenterScreen;
            this.FormBorderStyle = FormBorderStyle.Fixed3D;
            this.ForeColor = SystemColors.Desktop;
            this.Font = new Font("宋体",12);
            this.BackColor = Color.Blue;
            this.ClientSize = new Size(400, 500);
            this.Opacity = 0.5;
            Label lblTitle = new Label();
            lblTitle.Text = "Transparent background";          
            lblTitle.Location = new Point(100,100);
            this.Controls.Add(lblTitle);
        }

        private void Transparent_Load(object sender, EventArgs e)
        {

        }
    }
}