Question

我需要在按钮点击事件下方自动化而不实际点击按钮..

请给我一个简单的解决方案..

   private void button4_Click(object sender, EventArgs e)
    {
        int i = 0, aResult = 0;
        int[] aLen = new int[1];
        byte[] aUID = new byte[7];
        byte[] NbTg = new byte[1];
        byte[] RData = new byte[64];
        byte[] RDataLen = new byte[1];
        byte[] InitData = new byte[64];
        String ValStr = "";

        aResult = aResult = PN_InListPassiveTarget(0, 0, 1, 0, 0, InitData, NbTg, RDataLen, RData);
        if (0 == aResult)
        {
            for (i = 0, ValStr = ""; i < RData[4]; i++)
                ValStr += RData[5 + i].ToString("X2");
            textBox1.Text = ValStr;

        }
        else
            MessageBox.Show("Please Hold Your Meal Card");
    }

Answer 1

您可以使用计时器以2秒的间隔启动事件。你可以将NFC读卡器逻辑放在它自己的功能中，让定时器从第一次点击开始调用该功能，直到卡被成功读取：

using System.Timers;

public partial class MainWin : Form
    {
        public MainWin()
        {
            InitializeComponent();
        }

        Timer nfcTimer;

        private void buttonStartNFC_Read_Click(object sender, EventArgs e)
        {
            try
            {
                nfcTimer = new Timer(2000)); \\ <- 2000 milliseconds is 2 seconds
                nfcTimer.Elapsed += new ElapsedEventHandler(readCard);
                nfcTimer.Enabled = true;

                buttonNFC.Enabled = false; \\ u probably want to disable the button
            }
            catch (Exception ex)
            {
                print("Exception in :" + ex.Message);
            }
        }

您可以将NFC读卡器逻辑放在此处：

 public  void readCard(object sender, ElapsedEventArgs e){
    // read card

    // failed to read the NFC card -> continue with the timer every 2 sec

    // The card was read successfully, you can disable the timer
    nfcTimer.Enabled = false;
 }

您可以在此处找到有关如何以编程方式调用按钮的Click事件的更多信息：http://msdn.microsoft.com/en-ca/library/hkkb40tf(v=vs.90).aspx

Answer 2

如果有一个事件会检测到该卡，您可以在那里设置一个定时器，在2秒后运行以执行此代码。如果仍然需要通过按钮单击运行代码，请将代码移动到方法并从两个位置调用它。

Answer 3

为什么不使用这样的计时器？ -

    // Create a timer with a two second interval.
    aTimer = new System.Timers.Timer(2000);
    // Hook up the Elapsed event for the timer. 
    aTimer.Elapsed += button4_Click;
    aTimer.Enabled = true;

Elapsed事件的实际事件处理程序签名是 -

private static void OnTimedEvent(Object source, ElapsedEventArgs e)
{
    Console.WriteLine("The Elapsed event was raised at {0}", e.SignalTime);
}

http://msdn.microsoft.com/en-us/library/system.timers.timer(v=vs.110).aspx

但是EventArgs是ElapsedEventArgs的超类，所以你可以使用它。

自动化按钮单击C＃

3 个答案: