Problem sa formom u C#

Code:
System.Windows.Forms.Label target;

if (textBoxName.Text == "prva")
  target = labelFirst;
else if (textBoxName.Text == "druga")
  target = labelSecond;
else if (textBoxName.Text == "treca")
  target = labelThird;

System.Drawing.Color color;

if (textBoxLight.Text == "Red")
  color = Color.Red;
else if (textBoxLight.Text == "Yellow")
  color = Color.Yellow;
else if (textBoxLight.Text == "Green")
  color = Color.Green;

target.BackColor = color;

Code:
Targets[textBoxName.Text].BackColor = Colors[textBoxLight.Text];

Code:

public class StisnuoEventArgs : EventArgs
    {
        public string Name { get; set; }
        public string Light { get; set; }
        
        public StisnuoEventArgs(string n, string l)
        { 
            Name = n;
            Light = l;
           
         }


public void Update(StisnuoEventArgs args)
        {
            foreach (KeyValuePair<string, LightValue> kvp in Lights)
            {
                if (args.Name == kvp.Key)
                {
                     switch (args.Light.ToString())
                    {
                        case "Red":
                            Lights.Add(args.Name, Semafor.LightValue.Red); break;
                        case "Green":
                            Lights.Add(args.Name, Semafor.LightValue.Green); break;
                        case "Orange":
                            Lights.Add(args.Name, Semafor.LightValue.Orange); break;
                    }
                    break;
                }

Code:


 public class Semafor : Panel
    {
        public enum LightValue { Red, Orange, Green }
        public Dictionary<string, LightValue> Lights = new Dictionary<string, LightValue>();

        public int NumLights
        {
            get
            {return Lights.Count;}

        }

        public Semafor()
        {

        }
        private delegate void UpdateDelegate();

        public void Update(StisnuoEventArgs args)
      {
        .
        .
        .
       }
  SolidBrush blueBrush = new SolidBrush(Color.Cyan); //za crtanje forme
           

            W0 = (width - L * 2) / Lights.Count;
            W2 = W0 - W1 - B - D;

            Graphics G = e.Graphics;
            e.Graphics.FillRectangle(blueBrush, X, Y, width, height);

            foreach (KeyValuePair<string, LightValue> kvp in Lights)
            {                
                switch (kvp.Key)
                {
                    case "jupi":
                        {
                            SolidBrush orangeBrush = new SolidBrush(Color.Orange);
                            e.Graphics.FillRectangle(orangeBrush, X1, Y1, H1, W1);
                            X += space;

                             G.DrawString(kvp.Key, Font, new SolidBrush(ForeColor), new PointF(Left, Top));
                              // X += L;
                               X1 += W0;
                               Left += W0;
                               break;
                        }
                 
                        .
                        .        

Code:
Sem.Lights["jupi"] = Semafor.LightValue.Green;
Sem.Invalidate();

Code:

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 Semafor
{
    public partial class Form1 : Form
    {
        private Panel panel1;
        private TextBox LightBox;
        private TextBox NameBox;
        private Button GoBox;
        private Semafor Sem;

        public Form1()
        {
            InitializeComponent();
            Sem = new Semafor();
            Sem.Dock = DockStyle.Top;
            Sem.Lights.Add("jupi", Semafor.LightValue.Orange);
            Sem.Lights.Add("ipuj", Semafor.LightValue.Red);
            Sem.Lights.Add("piju", Semafor.LightValue.Green);           
            Push += new PushDelegate(Sem.Update);
            Controls.Add(Sem);

           
        }

        private void InitializeComponent()
        {
            this.panel1 = new System.Windows.Forms.Panel();
            this.GoBox = new System.Windows.Forms.Button();
            this.NameBox = new System.Windows.Forms.TextBox();
            this.LightBox = new System.Windows.Forms.TextBox();
            this.panel1.SuspendLayout();
            this.SuspendLayout();
            .
            .
            .

        }     

        public delegate void PushDelegate(PushEventArgs args);
        public event PushDelegate Push;

        private void OnPush(PushEventArgs args)
        {
            Console.WriteLine(args.ToString());
            if (Push != null)
            {
                Push(args);
            }
        }

        private void GoBox_Click(object sender, EventArgs e)
        {
            OnPush(new PushEventArgs(NameBox.Text, LightBox.Text));
        }

    }

    public class PushEventArgs : EventArgs
    {
        public string Name { get; set; }
        public string Light { get; set; }
        
        public PushEventArgs(string n, string l)
        { 
            Name = n;
            Light = l;
           
         }
        public override string ToString()
        {
            return "Name = " + Name + ", Light = " + Light;
        }
    }
}



namespace Semafor
{

    public class Semafor : Panel
    {
        public enum LightValue { Red, Orange, Green }
        public Dictionary<string, LightValue> Lights = new Dictionary<string, LightValue>();

        public int NumLights
        {
            get
            {return Lights.Count;}

        }

        public Semafor()
        {

        }
       
        private delegate void UpdateDelegate();
 
        public void Update(PushEventArgs args)
        {
            foreach (KeyValuePair<string, LightValue> kvp in Lights)
            {
                if (args.Name == kvp.Key)
                {                 
                   switch (args.Light)
                    {
                        case "Red":                            
                            Lights.Add(args.Name, Semafor.LightValue.Red);                                                   
                            break;
                        case "Green":
                            Lights.Add(args.Name, Semafor.LightValue.Green);                           
                            break;
                        case "Orange":
                            Lights.Add(args.Name, Semafor.LightValue.Orange); break;
                    }
                    break;
                }
                                                   
            }             
               if (InvokeRequired)
                    BeginInvoke(new UpdateDelegate(Invalidate));
                else
                    Invalidate();
                  
            }

        float X0 = 0.0F;
        float X = 0.0F;
        float Y = 0.0F;
        int width = 165;
        float height = 26.0F;
        int L = 3;
        float D = 3.0F;
        float B = 3.0F;
        int W0 = 0;
        float W2 = 0F;
        int space = 23;

        protected override void OnPaint(PaintEventArgs e)
        {

            float X1 = 3.0F;
            float Y1 = 3.0F;
            float W1 = 20.0F;
            float H1 = 20.0F;
            int Left = 24;
            int Top = 5;

            SolidBrush blueBrush = new SolidBrush(Color.Cyan);
           

                W0 = (width - L * 2) / Lights.Count;
            W2 = W0 - W1 - B - D;
            Graphics G = e.Graphics;
            e.Graphics.FillRectangle(blueBrush, X0, Y, width, height);

            foreach (KeyValuePair<string, LightValue> kvp in Lights)
            {                
                switch (kvp.Key)
                {
                    case "jupi":
                        {
                            SolidBrush orangeBrush = new SolidBrush(Color.Orange);
                            e.Graphics.FillRectangle(orangeBrush, X1, Y1, H1, W1);
                            X += space;

                             G.DrawString(kvp.Key, Font, new SolidBrush(ForeColor), new PointF(Left, Top));
                               X += L;
                               X1 += W0;
                               Left += W0;
                               break;
                        }
                    case "ipuj":
                       {
                        .
                        .
                        .
                        }
                    default:                        
                        {
                            SolidBrush orangeBrush = new SolidBrush(Color.Blue);
                            e.Graphics.FillRectangle(blueBrush, X1, Y1, H1, W1);
                            X += space;

                            G.DrawString("Error", Font, new SolidBrush(ForeColor), new PointF(Left, Top));
                            X += L;
                            X1 += W0;
                            Left += W0;
                            break;
                        }
                    }
            }
        }
    }
}