Sensor de temperatura y control con un PIC PIC16F887

sensor-temperatura-contro.c

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Diagnostics;
using System.Threading;
using System.Windows.Forms;
using System.Windows.Forms.DataVisualization.Charting;

namespace SerialPort
{
public partial class Form1 : Form
{
string RxString;
int y;
public Form1()
{
InitializeComponent();
}
public void timer1_Tick(object sender, EventArgs e)
{
this.tiempo.Text = DateTime.Now.ToString("dddd d MMMM yyyy \n        HH:mm.ss ");
Di();
}

private void button1_Click(object sender, EventArgs e)
{
serialPort1.PortName ="COM3";
serialPort1.BaudRate =9600;
try
{

serialPort1.Open();
if (serialPort1.IsOpen)
{
//recibido.Clear();
btStart.Enabled = false;
btStop.Enabled = true;
textBox1.ReadOnly = false;
lStatus.Text = "CONECTADO";
lStatus.ForeColor = Color.Green;
cbPorts.Enabled = false;

}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void Di()
{
if (serialPort1.IsOpen)

do
{
Thread.Sleep(500);
y = Convert.ToInt32(RxString);
if (y >= 40)
{
this.label7.Text = Convert.ToString(y) + ".00 °C";
label7.BackColor = Color.Red;
label7.ForeColor = Color.White;
this.label9.Text = "ALERTA TEMPERATURA ALTA";
label9.BackColor = Color.Red;
label9.ForeColor = Color.Yellow;
this.label12.Text = "MOTORES ACTIVADOS";
}
else
{
if (y < 40 && y >= 10)
{
this.label7.Text = Convert.ToString(y) + " °C";
label7.BackColor = Color.Yellow;
label7.ForeColor = Color.Red;
this.label9.Text = "";
this.label12.Text = "MOTOR 1 ACTIVADO";
}
else
{
if (y < 10 && y >= -10)
{
this.label7.Text = Convert.ToString(y) + " °C";
label7.BackColor = Color.Green;
label7.ForeColor = Color.Yellow;
this.label9.Text = "";
this.label12.Text = "MOTORES DESACTIVADOS";
}
}

}
} while (!serialPort1.IsOpen);
}

private void signalRead()
{
}

private void DisplayText(object sender, EventArgs e)
{
textBox1.AppendText(RxString);
}

private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
RxString = serialPort1.ReadExisting();
this.Invoke(new EventHandler(DisplayText));
}

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
// If the port is closed, don't try to send a character.

if (!serialPort1.IsOpen) return;

// If the port is Open, declare a char[] array with one element.
char[] buff = new char[1];

// Load element 0 with the key character.

buff[0] = e.KeyChar;

// Send the one character buffer.
serialPort1.Write(buff, 0, 1);

// Set the KeyPress event as handled so the character won't
// display locally. If you want it to display, omit the next line.
e.Handled = true;
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (serialPort1.IsOpen) serialPort1.Close();
}

private void btStop_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)
{
serialPort1.Close();
btStart.Enabled = true;
btStop.Enabled = false;
textBox1.ReadOnly = true;
// trackBar1.Enabled = false;
//trackBar1.Value = 1;
// button1.Enabled = false;
cbPorts.Enabled = true;
lStatus.Text = "DESCONECTADO";
lStatus.ForeColor = Color.Red;
}
}

private void button1_Click_1(object sender, EventArgs e)
{
Application.Exit();
}

private void Form1_Load(object sender, EventArgs e)
{

}

}
}

Buenas tardes hector no se si tu creaste este codigo o lo editaste. Pero fijate que tengo el problema en las lineas de los if (63, 75, 85) me da error en las variables &lt &amp y &gt . Bueno , para empezar veo que el codigo dice .c y de la pagina que vengo siguiendo dice que es csharp y total no me corre en c# . Es este codigo c?

Me parecen extraños los ; dentro de una condicion total no me compila en c#.net