在C#中将字符写入com端口 [英] writing characters to com ports in c#

问题描述

大家好，我想知道是否有人可以帮我...

我是C#的新手，而且很难将后续字符写入COM端口.
我基本上需要发送一个用户输入的字符，然后在字符"x"之前稍作停顿.
我可以发送输入字符...或程序中定义的char，但是仅执行第一条指令，我不确定为什么.我尝试了几种方法，但似乎都没有解决问题的方法.

这是我的代码段，我真的很乐意提供帮助.

理想情况下，我希望程序等待将char输入到buff [0]中.将此字符发送到COM端口；发送"x"字符到通讯端口，然后等待下一个字符输入到buff [0]

尝试一个...

Hey guys, was wondering if somebody could give me a hand...

I''m relativly new to c# and I''m having difficulty writing subsequent characters to a com port.
I basically need to send a user-input character followed by a short pause before the char ''x''.
I can send either the input character...OR a char defined in the program but only the first instruction is executed and I''m not sure why. I''ve tried a few methods but none seem to do the trick...

Here''s snippets of my code, I''d really appriciate the help.

Ideally I''d like the program to wait for a char to be entered into buff[0]; send this character to com port; send ''x'' char to com port and then wait for the next character to be entered into buff[0]

attempt one...

char[] buff = new char[1];
char[] xbuff = new char[1];

buff[0] = e.KeyChar;
xbuff[0] = 'x';

serialPort1.Write(buff, 0, 1);
System.Threading.Thread.Sleep(500);
serialPort1.Write(xbuff, 0, 1);
System.Array.Clear(buff, 0, 1);

尝试两个...

attempt two...

string lettera = ((char)97).ToString();
string letterb = ((char)98).ToString();

serialPort1.Write(lettera);
System.Threading.Thread.Sleep(500);
serialPort1.Write(letterb);

由于两次尝试的某种原因，只会发送第一个字符.最近两天我一直在拔头发，真的很感谢任何想法

M.

For some reason on both attempts only the first char will be sent. I''ve been pulling my hair out for the last 2 days and would really be grateful for any ideas

M.

推荐答案

问题可能是因为您可能以字节数组而不是char发送数据.

无论如何，这可以为您提供帮助:点击

It''s possible that the problem comes because you may send data in byte arrays instead of char.

Anyway, this can help you: CLICK
Or this: CLICK

看看在本文中:
使用C#和Whidbey进行的串行通信 [

Take a look at this article:
Serial Communication using C# and Whidbey[^]

Regards
Espen Harlinn

采用了一种完全使用的方法，但它得到了排序...为回复打起精神

adopted a completly method but got it sorted...cheers for the reply

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