RF control using One Arduino and Computer

Hey guys ...
I'm trying to control arduino robot using Rf modules.I'm using very cheap fs1000a RF module.
I connected transmitter to Arduino ... and i connected Receiver to Computer using TTL to USB converter (PL2303)
and i create C# app As Receiving Interface.
So im trying to send data from arduino to computer.I have no idea ,How to do that.
i create a simple app to Know that Am i getting any kind of signal trough the serial port.
it's working ...im getting some numbers.

I will add Code below ..

The Arduino Code

void setup()
{
  pinMode(3,OUTPUT);
}

void loop()
{
   digitalWrite(3,HIGH);
   delay(50);
   digitalWrite(3,LOW);
   delay(50);
}

The C# Code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
namespace V_Wire
{
    public partial class Form1 : Form
    {
        SerialPort Rxprt;
        Byte inputbyte;
        int msg = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Rxprt = new SerialPort("COM27", 2000);
        }

        private void button1_Click(object sender, EventArgs e)
        {

            try
            {
                Rxprt.Open();
            }
            catch
            {
                MessageBox.Show("Connection Stablishing Faild", "Status");
            }
            timer1.Start();
     
            

        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (Rxprt.IsOpen == true)
            {
                msg = Rxprt.ReadByte();
                textBox1.Text = msg.ToString();
            }            
        }
    }
}

So does any one have any idea to send data using this method.
Any help Plz

i don't know C, C++ or C# so i can't comment on that side of the code - but it looks a bit too simple.
just like the Arduino side is too simple.

i didn't know that "fs1000a" is what it was called - they're usually just called 433MHz (or 315MHz) RF kit and i have recently suceeded using them but that's between two Arduinos.

i'll post the link to my thread shortly to give you an idea of what the code should look like.

it's not a case of just Serial connection and sending "digital bits" - there's necessary encoding/decoding going on which is called "ASK modulation" in the datasheet - that is taken care of, software-wise, by the VirtualWire library which there seems to be a hint in your C# code that you're using it.

here's the link to my thread;
http://forum.arduino.cc/index.php?topic=218898.msg1597299#msg1597299

hey thanks..... i'll try ...
I can use V.wire library .but i dont know how to use it with C#

I code C# app,and Arduino just for test ... so it is too simple... im sorry about that