using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.IO.Ports; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApp2 { public partial class frm_SerianTest : Form { /// <summary> /// frm_SerianTest建構函式 /// </summary> public frm_SerianTest() { InitializeComponent();//部件初始化 } private SerialPort SerialPort_0 = new SerialPort();//例項化串列埠裝置 //private Encoding Encoding_0 = Encoding.Default;//選用預設編碼模式 /// <summary> /// 定時器事件:實現系統時間獲取 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void timer1_Tick(object sender, EventArgs e) { //實現系統時間顯示 Lbl_SysTime.Text = DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss"); } /// <summary> /// 視窗載入事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void frm_SerianTest_Load(object sender, EventArgs e) { timer1.Interval = 1000;//時間間隔1000 單位:ms timer1.Start();//啟用間隔時間事件 timer1.Tick += timer1_Tick; //獲取可用埠號 string[] Ports = SerialPort.GetPortNames(); if (Ports.Length>0)//獲取陣列長度大於0 { cmb_Port.DataSource = Ports;//獲取到的埠號賦值給Cmb_Port } //波特率設定 int[] Bauds = { 1200, 2400, 4800, 9600, 12800, 115200 }; cmb_BaudRate.DataSource = Bauds; cmb_BaudRate.SelectedIndex = 3;//開機預設9600 //校驗位設定(typeof:可以取得變數的型別，或者表示式的型別) cmb_ParityBit.DataSource = Enum.GetNames(typeof(Parity));//獲取Parity列舉的各名稱; //資料位設定 int[] DataBits = { 5, 6, 7, 8 }; cmb_DateBit.DataSource = DataBits; cmb_DateBit.SelectedIndex = 3; //停止位設定 cmb_StopBit.DataSource = Enum.GetNames(typeof(StopBits));//獲取Parity列舉的各名稱; cmb_StopBit.SelectedIndex = 1; } /// <summary> /// 重新整理可用埠事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_Refresh_Click(object sender, EventArgs e) { string[] Ports = SerialPort.GetPortNames();//獲取電腦中可用的埠 if (Ports.Length > 0) { cmb_Port.DataSource = Ports; } } /// <summary> /// 與虛擬串列埠裝置建立連線事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void btn_ConnectReader_Click(object sender, EventArgs e) { if (btn_ConnectReader.Text == "連線") { if (SerialPort_0.IsOpen)//如果已經建立連線則先斷開 { SerialPort_0.Close(); } try //(*Trim()是去空格*) { SerialPort_0.PortName = cmb_Port.Text.Trim(); SerialPort_0.BaudRate = Convert.ToInt32(cmb_BaudRate.Text.Trim()); SerialPort_0.DataBits = Convert.ToInt32(cmb_DateBit.Text.Trim()); SerialPort_0.Parity = (Parity)Enum.Parse(typeof(Parity), cmb_ParityBit.Text.Trim(), true);//將comboBox中的字串轉換為Parity列舉型別 SerialPort_0.StopBits = (StopBits)Enum.Parse(typeof(StopBits), cmb_StopBit.Text.Trim(), true);//將comboBox中的字串轉換為StopBits列舉型別 SerialPort_0.Encoding = Encoding.Default;//選用預設編碼方式 SerialPort_0.ReceivedBytesThreshold = 1;//預設快取區為1個位元組 SerialPort_0.DataReceived += SerialPort_0_DataReceived; SerialPort_0.Open();//開啟連線 //MessageBox.Show("連線成功"); Log("連線成功!" ); //禁用眾多通訊引數配置選項 btn_Refresh.Enabled = false; btn_ConnectReader.Text = "斷開"; cmb_Port.Enabled = false; cmb_BaudRate.Enabled = false; cmb_DateBit.Enabled = false; cmb_StopBit.Enabled = false; cmb_ParityBit.Enabled = false; } catch (Exception ex) { //MessageBox.Show("連線失敗"+ex.Message); Log("連線失敗!" + ex.Message); } } else if (btn_ConnectReader.Text == "斷開") { SerialPort_0.Close(); //MessageBox.Show("斷開成功"); Log("已斷開!"); //啟用通訊引數配置項 btn_Refresh.Enabled = true; btn_ConnectReader.Text = "連線"; cmb_Port.Enabled = true; cmb_BaudRate.Enabled = true; cmb_DateBit.Enabled = true; cmb_StopBit.Enabled = true; cmb_ParityBit.Enabled = true; } } private void SerialPort_0_DataReceived(object sender, SerialDataReceivedEventArgs e) { try { //因為要訪問UI資源，所以需要使用invoke方式同步ui this.Invoke((EventHandler)(delegate { string result = string.Empty; result = SerialPort_0.ReadExisting(); Log("掃碼結果:" + result); }) ); } catch (Exception ex) { //響鈴並顯示異常給使用者 //System.Media.SystemSounds.Beep.Play(); Log(ex.Message); } } //透過ListView將資訊顯示 private void Log(string info) { Invoke(new Action(() => { string time = DateTime.Now.ToString(); ListViewItem Lst = new ListViewItem(time); Lst.SubItems.Add(info); listView1.Items.Insert(0, Lst); })); } private void btn_ManulCode_Click(object sender, EventArgs e) { if (tbox_ManulCode.Text==string.Empty) { Log("條碼資訊不能為空!"); } else { Log("手動輸入條碼結果:" + tbox_ManulCode.Text); tbox_ManulCode.Text = ""; } } private void btn_Send_Click(object sender, EventArgs e) { if (SerialPort_0.IsOpen) { if (tbox_SendData.Text != string.Empty) { try { SerialPort_0.Write(tbox_SendData.Text.Trim()); } catch (Exception ex) { Log("傳送失敗," + ex); } Log("傳送內容:" + tbox_SendData.Text); } else { Log("沒有傳送內容!"); } } else { Log("串列埠未開啟!"); } } } }