C#串口接收大量数据，事件触发设置

void comm_DataReceived(object sender, SerialDataReceivedEventArgs e)  

        {

               int n = comm.BytesToRead;//先记录下来，避免某种原因，人为的原因，操作几次之间时间长，缓存不一致  

                byte[] buf = new byte[n];//声明一个临时数组存储当前来的串口数据  

                received_count += n;//增加接收计数  

                comm.Read(buf, 0, n);//读取缓冲数据  

                builder.Clear();//清除字符串构造器的内容  

                //因为要访问ui资源，所以需要使用invoke方式同步ui。  

                this.Invoke((EventHandler)(delegate  

                {  

                    //直接按ASCII规则转换成字符串  

                        builder.Append(Encoding.ASCII.GetString(buf));  

                   

                    //追加的形式添加到文本框末端，并滚动到最后。  

                    this.txGet.AppendText(builder.ToString()); 

                  this.txGet.AppendText(“\n”); 

                    //修改接收计数  

                    labelGetCount.Text = "Get:" + received_count.ToString();  

                }));

}

串口的数据是以20hz频率发送形如#HEADINGA,COM1,0,19.5,FINESTEERING,1751,41243.050,00000000,9722,10985;SOL_COMPUTED,NARROW_INT,4.269080639,247.762725830,2.489746809,0.0,0.068533905,0.116395399,"AAAA",14,14,14,13,0,01,0,33*1788d10a