private void button1_Click(object sender, EventArgs e)
        {
            ConquestionServiceClient client = new ConquestionServiceClient();

            Player foundPlayer = client.RetrievePlayer(textBox1.Text);

            if (textBox1.Text != null && textBox1.Text != String.Empty)
            {
                if (foundPlayer == null)
                {
                    Player newPlayer = client.CreatePlayer(new Player {
                        Name = textBox1.Text
                    });
                    PC.Player = newPlayer;
                    this.Hide();
                    (new JoinGame()).Show();
                }
                else
                {
                    this.Hide();
                    PC.Player = foundPlayer;
                    (new JoinGame()).Show();
                }
            }
            else
            {
                MessageBox.Show("Name can not be empty!", "Error",
                                MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }