如何控制C＃windows应用程序中的闪烁问题以显示串口数据？ [英] How to control flickering problem in C# windows application to display data from serial port?

问题描述

大家好，



我在串口显示标签中的数据。数据显示正常，但数据闪烁的标签控件。如何停止这个闪烁的问题是为了正确显示数据。



这是我的代码 -

Hello all,

I am showing data in label from serial port.Data display is OK but the label control on which data is flickering.How can i stop this flickering problem to display data properly.

Here is my code-

private void button1_Click(object sender, EventArgs e)
        {
            SerialPort mySerialPort = new SerialPort("COM1");

            mySerialPort.BaudRate = 9600;
            mySerialPort.Parity = Parity.None;
            mySerialPort.StopBits = StopBits.One;
            mySerialPort.DataBits = 8;
            mySerialPort.Handshake = Handshake.None;
            mySerialPort.RtsEnable = true;

            SerialPort sp = (SerialPort)sender;
            label1.Text = sp.ReadExisting();
            mySerialPort.Open();
            mySerialPort.Close();
        }

这里是新代码 -

here is the new code--

public partial class MainForm : Form
    {
        SerialPortManager _spManager;


        
        public MainForm()
        {
            InitializeComponent();
            
            DoubleBuffered = true;
            UserInitialization();
                       
        }


        
        private void UserInitialization()
        {
            _spManager = new SerialPortManager();
            SerialSettings mySerialSettings = _spManager.CurrentSerialSettings;
            serialSettingsBindingSource.DataSource = mySerialSettings;
            portNameComboBox.DataSource = mySerialSettings.PortNameCollection;
            baudRateComboBox.DataSource = mySerialSettings.BaudRateCollection;
            dataBitsComboBox.DataSource = mySerialSettings.DataBitsCollection;
            parityComboBox.DataSource = Enum.GetValues(typeof(System.IO.Ports.Parity));
            stopBitsComboBox.DataSource = Enum.GetValues(typeof(System.IO.Ports.StopBits));

            _spManager.NewSerialDataRecieved += new EventHandler<SerialDataEventArgs>(_spManager_NewSerialDataRecieved);
            this.FormClosing += new FormClosingEventHandler(MainForm_FormClosing);
        }

        
        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            _spManager.Dispose();   
        }

        void _spManager_NewSerialDataRecieved(object sender, SerialDataEventArgs e)
        {
            if (this.InvokeRequired)
            {
                
                this.BeginInvoke(new EventHandler<SerialDataEventArgs>(_spManager_NewSerialDataRecieved), new object[] { sender, e });
                return;
            }

            int maxTextLength = 1000; // maximum text length in text box
            if (tbData.TextLength > maxTextLength)
                tbData.Text = tbData.Text.Remove(0, tbData.TextLength - maxTextLength);

           
            string str = Encoding.ASCII.GetString(e.Data);
            tbData.AppendText(str);
            tbData.ScrollToCaret();
            DoubleBuffered = true;
            label1.Text = str;
            


        }

        
        private void btnStart_Click(object sender, EventArgs e)
        {
            _spManager.StartListening();
        }

        
        private void btnStop_Click(object sender, EventArgs e)
        {
            _spManager.StopListening();
        }
    }

< br $>




谢谢



我尝试了什么：



我用过以下代码 -



protected override CreateParams CreateParams {

得到{

CreateParams cp = base.CreateParams;

cp.ExStyle | = 0x02000000; //打开WS_EX_COMPOSITED

返回cp;

}

}

Thanks

What I have tried:

I have used below code-

protected override CreateParams CreateParams {
get {
CreateParams cp = base.CreateParams;
cp.ExStyle |= 0x02000000; // Turn on WS_EX_COMPOSITED
return cp;
}
}

推荐答案

尝试将DoubleBuffered设置为true：控制。 DoubleBuffered属性（System.Windows.Forms） [ ^ ] - 从标签开始，然后是表格。

Try setting DoubleBuffered to true: Control.DoubleBuffered Property (System.Windows.Forms)[^] - start with the label, and then the form.

这篇关于如何控制C＃windows应用程序中的闪烁问题以显示串口数据？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！