serial communication using GUI

__CONFIG (EC & WDTDIS & PWRTDIS  & UNPROTECT &  MCLREN & BORDIS & FCMEN & IESOEN);

void UARTInitialise(void)
{
        TXSTA=0;                        // set up transmitter
        TXEN=1;                         // Asychronous, 8 bit, BRGH=1
        BRGH=1;
        TRMT=1;
        TRISC6=0;                       // C6 - TX  set as output pin

        RCSTA=0;                        // set up receiver
        SPEN=1;                         // Asychronous, 8 bit, continuous receive, serial enable
        CREN=1;    
        TRISC7=1;                       // C7 - RX receive set as input pin

// calculate Baud Rate = FOSC/(16 (X + 1))
//#define BaudRate      51              //SPBRG value for 9600 Baud when Fosc=8MHz and BRGH=1
#define BaudRate    8                   //SPBRG value for 57600 Baud when Fosc=8MHz and BRGH=1
        SPBRG=BaudRate;                 // setup baud rate

	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
			//
			//TODO: Add the constructor code here
			//
			serialPort1->Open();
		}

	protected:
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::TextBox^  textBox1;
	private: System::IO::Ports::SerialPort^  serialPort1;
	private: System::Windows::Forms::TextBox^  textBox2;
	private: System::ComponentModel::IContainer^  components;
	protected: 

	private:
		/// <summary>
		/// Required designer variable.
		/// </summary>


#pragma region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		void InitializeComponent(void)
		{
			this->components = (gcnew System::ComponentModel::Container());
			this->textBox1 = (gcnew System::Windows::Forms::TextBox());
			this->serialPort1 = (gcnew System::IO::Ports::SerialPort(this->components));
			this->textBox2 = (gcnew System::Windows::Forms::TextBox());
			this->SuspendLayout();
			// 
			// textBox1
			// 
			this->textBox1->Location = System::Drawing::Point(12, 174);
			this->textBox1->Multiline = true;
			this->textBox1->Name = L"textBox1";
			this->textBox1->ScrollBars = System::Windows::Forms::ScrollBars::Both;
			this->textBox1->Size = System::Drawing::Size(515, 150);
			this->textBox1->TabIndex = 0;
			this->textBox1->KeyPress += gcnew System::Windows::Forms::KeyPressEventHandler(this, &Form1::textBox1_KeyPress);
			// 
			// serialPort1
			// 
			this->serialPort1->BaudRate = 19200;
			this->serialPort1->DataReceived += gcnew System::IO::Ports::SerialDataReceivedEventHandler(this, &Form1::serialPort1_DataReceived);
			// 
			// textBox2
			// 
			this->textBox2->Location = System::Drawing::Point(12, 12);
			this->textBox2->Multiline = true;
			this->textBox2->Name = L"textBox2";
			this->textBox2->ScrollBars = System::Windows::Forms::ScrollBars::Both;
			this->textBox2->Size = System::Drawing::Size(515, 156);
			this->textBox2->TabIndex = 1;
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(594, 351);
			this->Controls->Add(this->textBox2);
			this->Controls->Add(this->textBox1);
			this->Name = L"Form1";
			this->Text = L"Form1";
			this->ResumeLayout(false);
			this->PerformLayout();

		}
#pragma endregion
	private: System::Void textBox1_KeyPress(System::Object^  sender, System::Windows::Forms::KeyPressEventArgs^  e) {
		// key hit over textbox send down serial line
		cout << "key press " << char(e->KeyChar) << endl;
		char data[2]="";
		data[0]=char(e->KeyChar);
		String ^sdata=gcnew String(data);
		serialPort1->Write(sdata);
		}
	private: System::Void serialPort1_DataReceived(System::Object^  sender, System::IO::Ports::SerialDataReceivedEventArgs^  e) {
		// character received from serial line, display it in textbox
		String^ message = serialPort1->ReadLine();
                textBox2->Text = textBox2->Text + message + "\r\n";				 
			 }
	};
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace CsharpTerminal
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            serialPort1.Open();
            backgroundWorker1.RunWorkerAsync();
        }

        private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
        {
            // key on textbox pressed, read key and transmit down serial line
            Console.WriteLine("keypress " + e.KeyChar);
            char[] data = { e.KeyChar };
            string s = new string(data);
            serialPort1.Write(s);
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            Console.WriteLine("background worker");
            while(true)
            {
                // check for characters received from serial port and display on textbox
                char[] data=new char[100];
                serialPort1.Read(data,0,100);
                // replace "\n" with "\r\n" for newlines in textbox
                char[] data2 = new char[200];
                int i, j;
                for (i = j = 0; i < 100; i++)
                    if(data[i]=='\n')
                        { data2[j++] = '\r'; data2[j++] = '\n'; }
                    else
                        data2[j++]=data[i];
                string sdata = new string(data2);
                textBox1.AppendText(sdata);
            }
        }
    }
}