********************************************************************** Windows.Forms ***********************************************
 public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {

        }
        public int a;
        public int b;
        public int[,] Tablica;

        public void button1_Click(object sender, EventArgs e)
        {
            string s = textBox4.Text;
            a = Convert.ToInt32(s);
            string s1 = textBox4.Text;
            b = Convert.ToInt32(s1);

            if (textBox1.Text == "")
            {
                 Tablica = Tablice.Tab.GenTab2D(a, b);
                for (int i = 0; i < a; i++)
                {
                    for (int j = 0; j < b; j++)
                    {
                        textBox1.AppendText(Tablica[i, j].ToString() + "\t");
                    }
                    textBox1.AppendText("\n");
                }
            }

        }


        public void button2_Click(object sender, EventArgs e)
        {
            if(textBox2.Text=="")
            {
                List<int> Lista = Tablice.Tab.Lista(Tablica, a,b);
                foreach (int liczba in Lista)
                {
                    textBox2.AppendText(liczba.ToString() + "\t");
                }
            }
        }

        private void textBox4_TextChanged(object sender, EventArgs e)
        {

        }
    }
}

*****************************************************Aplikacja Konsolowa*********************************************
  static void Main(string[] args)
        {
            Console.WriteLine("Podaj rozmiar a: ");
            string r1 = Console.ReadLine();
            Console.WriteLine("Podaj rozmiar b: ");
            string r2 = Console.ReadLine();

            int a = int.Parse(r1);
            int b = int.Parse(r2);
            int[,] Tab = Tablice.Tab.GenTab2D(a, b);
            for (int i = 0; i <a; i++) {
                for (int j = 0; j < b; j++)
                {
                    Console.Write("{0} \t", Tab[i,j]);
                }
                Console.WriteLine();
            }
            Console.WriteLine();

            int[,] Tab2 = Tablice.Tab.Tabzsilnia(a, b);
            for (int i=0; i<a; i++)
            {
                for(int j=0; j<b; j++)
                {
                    Console.Write("{0} \t", Tab2[i, j]);
                }
                Console.WriteLine();
            }
            Console.WriteLine();

            double sredniakwadratowa = Tablice.Tab.SredniaKwadratowa(Tab, a, b);
            Console.Write(sredniakwadratowa);
            Console.WriteLine();

            List<int> Lista = Tablice.Tab.Lista(Tab, a, b);
            foreach(int liczba in Lista)
            {
                Console.Write("{0}\t", liczba);
            }

            Console.ReadKey();
        }
    }
}

****************************************************Biblioteka Klas************************************************************

  public class Tab
    {
        public static int[,] GenTab2D(int R1, int R2)
        {
            Random R = new Random();
            int[,] T = new int[R1, R2];
            for (int i = 0; i < R1; i++)
                for (int j = 0; j < R2; j++)
                {
                    T[i, j] = R.Next(100);
                }
            return T;
        }

        public static int[,] PrzekatnaTab2D(int R1, int R2)
        {
            Random R = new Random();
            int[,] T = new int[R1, R2];
            for (int i = 0; i < R1; i++)
                for (int j = 0; j < R2; j++)
                {
                    if (i == j)
                    {
                        T[i, j] = R.Next(100);
                    }
                    else
                    {
                        T[i, j] = 1;
                    }
                }
            return T;
        }

        public static int[,] Przekatna2Tab2D(int R1, int R2)
        {
            Random R = new Random();
            int[,] T = new int[R1, R2];
            for (int i = 0; i < R1; i++)
                for (int j = 0; j < R2; j++)
                {
                    if (i + j == R1 - 1)
                    {
                        T[i, j] = R.Next(100);
                    }
                    else
                    {
                        T[i, j] = 1;
                    }
                }
            return T;
        }

        public static int[,] PrzekatneTab2d(int R1, int R2)
        {
            Random R = new Random();
            int[,] T = new int[R1, R2];
            for (int i = 0; i < R1; i++)
                for (int j = 0; j < R2; j++)
                {
                    if (i == j)
                    {
                        T[i, j] = R.Next(100);
                    }
                    else if (i + j == R1 - 1)
                    {
                        T[i, j] = R.Next(100);
                    }
                    else
                    {
                        T[i, j] = 1;
                    }
                }
            return T;
        }

        public static double Srednia(int[,] Tab2d, int R1, int R2)
        {
            int Ilosc = Tab2d.Length;
            double liczba = 0;
            for (int i = 0; i < R1; i++)
                for (int j = 0; j < R2; j++)
                {
                    liczba = liczba + Tab2d[i, j];
                }
            double srednia = liczba / Ilosc;
            return srednia;
        }

        public static double SredniaKwadratowa(int[,] Tab2d, int R1, int R2)
        {
            int Ilosc = Tab2d.Length;
            double wynik = 0;
            for (int i = 0; i < R1; i++)
                for (int j = 0; j < R2; j++)
                {
                    wynik = wynik + (Tab2d[i, j]*Tab2d[i,j]);
                }
            double srednia = wynik / Ilosc;
            double sredniakwadratowa = Math.Sqrt(srednia);
            return sredniakwadratowa;
        }


        public static double Mediana(int[,] Tab2d, int R1, int R2)
        {
            int Ilosc = Tab2d.Length;
            int [] T = new int[Ilosc];
            int liczba=0;

            while(liczba<Ilosc)
            {
                for (int i=0; i<R1; i++)
                for(int j=0; j<R2; j++)
                {
                        T[liczba++] = Tab2d[i, j];
                }
            }
            int polowa;
            double mediana;
            if(Ilosc%2==0)
            {
                polowa = Ilosc / 2;
                mediana = (T[polowa - 1] + T[polowa])/2;
                return mediana;
            }
            else
            {
                polowa = Ilosc / 2;
                mediana = T[polowa];
                return mediana;
            }
        }

        public static int[,] Tabzsilnia (int R1, int R2)
        {
            int[,] T = new int[R1, R2];
            for (int i=0; i<R1;i++)
                for(int j=0; j<R2; j++)
                {
                    T[i, j] = Tablice.Tab.Silnia(i, j);
                }
            return T;
        }

        public static int Silnia(int i, int j)
        {
            int suma = i + j;
            int silnia = 1;
            if (suma == 0)
            {
                return 1;
            }
            else
            {
                while(suma>0)
                {
                    silnia = silnia * suma;
                    suma--;
                }
                return silnia;
            }
        }

        public static int [,] Sortowanie(int[,]Tab2d, int R1, int R2 )
        {
            int ilosc = Tab2d.Length;
            int[] T = new int[ilosc];
            int k = 0;
            while(k<ilosc)
                for(int i=0;i<R1;i++)
                    for(int j=0;j<R2;j++)
                    {
                        T[k++] = Tab2d[i, j];
                    }
            int c = 0;
            int n = ilosc;
            do
            {
                for (int i = 0; i < n - 1; i++)
                {
                    if (T[i] > T[i + 1])
                    {
                        int tmp = T[i];
                        T[i] = T[i + 1];
                        T[i + 1] = tmp;
                    }
                }
                n--;
            } while (n > 1);
            int[,] Tab = new int[R1, R2];
            int q = 0;
            while (q < ilosc)
                for (int i = 0; i < R1; i++)
                    for (int j = 0; j < R2; j++)
                    {
                        Tab[i,j]=T[q++];
                    }
            return Tab;
        }

        public static List<int> Lista(int[,] Tab2d, int R1, int R2)
        {
            List<int> lista = new List<int>();
            for (int i=0;i<R1;i++)
                for(int j=0;j<R2;j++)
                {
                    int suma = 0;
                    int counter = 1;
                    while (counter < Tab2d[i, j])
                    {
                        if (Tab2d[i, j] % counter == 0 && counter > 1)
                        {
                            suma = suma + (Tab2d[i, j] / counter);
                        }
                        counter++;
                    }
                    if (suma < Tab2d[i, j])
                    {
                        lista.Add(Tab2d[i, j]);
                    }
                }
            return lista;
        }
    }
}