串行端口通信中的数据重复与条形码

问题描述

我正在使用Windows应用程序。我正在使用串行端口（条形码）。我正在调用串行端口数据接收事件

I am working in windows Application. I am using Serial Port (Barcode). I am calling serial Port Data receive event as

_SerialPort.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler2);

And每次扫描都会引起火灾。问题是，当我扫描卡片中断5秒时，它给我数据正确，但是当我在5秒钟之前扫描时，我得到了重复数据（旧扫描数据）。当我在互联网上搜索时，我找到了DiscardBufferOut，我实现了它，但结果仍然相同。



代码： -

And In every scan it got fire. The problem is when I scan card for break of 5 seconds its give me data correct, but when I scan before 5 seconds I got duplicate data (old scan data). As I search in internet I found DiscardBufferOut and I implemented it but still the same result.

Code :-

SerialPort _SerialPort1 = new SerialPort();

_SerialPort1.BaudRate = 9600;
_SerialPort1.DataBits = 8;
_SerialPort1.Parity = Parity.None;
_SerialPort1.StopBits = StopBits.One;
_SerialPort1.PortName = "COM3";
_SerialPort1.Handshake = Handshake.None;

_SerialPort1.DataReceived += new SerialDataReceivedEventHandler(DataReceivedHandler1);

_SerialPort1.Open();

活动实施

Event Implementation

public static void DataReceivedHandler1(object sender, SerialDataReceivedEventArgs e)
{
 string indata = sp.ReadLine();
}

如果我在5秒前扫描卡片，我会得到重复数据（旧扫描数据），但如果我在5秒或6秒后扫描，我会得到新数据。

如果您有任何解决方案，请告诉我。





[Agent_Spock]

- 添加代码括号

- 更改问题的标题

If I scan Card before 5 seconds I get duplicate Data(old scanned data),but If I scan after 5 seconds or 6 seconds I get new data.
If you have any solutions please let me know.


[Agent_Spock]
- Added Code brackets
- Changed Heading of the question

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