private void btnGoTen_Click(object sender, EventArgs e)
    {
        if (isValidDirection())
            if (robot.Direction == "N")
                robot.Y -= 10;
        if (robot.Direction == "E")
            robot.X -= 10;
        if (robot.Direction == "S")
            robot.Y += 10;
        if (robot.Direction == "W")
            robot.X += 10;
        lblPosition.Text = robot.GetFormattedLocation();
        lblRobotLoc.Location = new Point(robot.X, robot.Y);
    }

    private void btnNorth_Click(object sender, EventArgs e)
    {
        robot.Direction = "N";
    }

    private void btnEast_Click(object sender, EventArgs e)
    {
        robot.Direction = "E";
    }

    private void btnSouth_Click(object sender, EventArgs e)
    {
        robot.Direction = "S";
    }

    private void btnWest_Click(object sender, EventArgs e)
    {
        robot.Direction = "W";
    }

public class Robot
{
    //fields
    private int x;
    private int y;
    private string direction;

    public Robot()
    {
        x = 0;
        y = 0;
        direction = "N";
    }


    public int X
    {
        get { return x; }
        set { x = value; }
    }

    public int Y
    {
        get { return y; }
        set { y = value; }
    }

    public string Direction
    {
        get { return direction; }
        set { direction = value; }
    }

    public string GetFormattedLocation()
    {
        string locationString = "{X=" + Convert.ToString(x) + ",Y=" + Convert.ToString(y) + "}";
        return locationString;
    }