这是C#串行端口通信的问题，

您必须将串行端口的编码更改为UTF-8

使用以下代码在C#中设置Encoding ..

SerialPort port = new SerialPort();
port.Encoding  = System.Text.Encoding.GetEncoding(1252);

Hi,
i am using c#.net from serial port communication in my project, but i am unable to handle hex values greater than 7F, so can i use VC++ for my project.

I don''t think that there is a problem with c# and serial port communication. If you face an issue, there seems to be a problem in your code. If you need advice on how to solve this, please show what you have done so far.

That is the Problem with C# SerialPort Communication,

You have to change the Encoding of your serialport to UTF-8

use the below code to set Encoding.. in C#

SerialPort port = new SerialPort();
port.Encoding  = System.Text.Encoding.GetEncoding(1252);