附加字符串时 C# SerialPort DataReceived 问题
我有一个 DataReceived 方法，用于触发从 RS232 设备发送数据。使用以下代码，事情运行顺利，
byte[] data = new Byte[serialPort.BytesToRead];
serialPort.Read(data, 0, data.Length);
string read = System.Text.Encoding.ASCII.GetString(data);
但如果我在数据后添加一个字符串，
string read = System.Text.Encoding.ASCII.GetString(data) + "asdf \n";
数据仍然会收到，但有时会显示不正确。例如，如果我连接到秤并且应该读取“10.45kg asdf”，它将在我的计算机上显示为“10.asdf45kg”。这里有什么问题呢？
I have a DataReceived method being trigger a data is send from a RS232 device. Things run smoothly with the following code
byte[] data = new Byte[serialPort.BytesToRead];
serialPort.Read(data, 0, data.Length);
string read = System.Text.Encoding.ASCII.GetString(data);
but if I add a string after a data
string read = System.Text.Encoding.ASCII.GetString(data) + "asdf \n";
The data is still received but occasionally would be displayed incorrectly. E.g. if I'm connecting to a scale and should be reading "10.45kg asdf" it would show on my computer as "10. asdf45kg". What is the problem here?
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当串行端口想要触发它时，
DataReceived方法将被触发，这不一定是当您从设备接收到完整字符串时。请参阅这个答案对细节进行了精彩的讨论。如果您有已知的终止符，则可以通过设置 SerialPort 的NewLine属性，然后使用ReadLine()来解决此问题。The
DataReceivedmethod will be triggered when the serial port feels like triggering it, which is NOT necessarily when you receive a full string from the device. See this SO answer for a great discussion of the details. If you have a known terminator character, you can work around this problem by setting theNewLineproperty of the SerialPort, and then usingReadLine().