private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text == "0")
            {
                textBox1.Clear();


            }

            Button button = (Button)sender;

            textBox1.Text = textBox1.Text + button.Text;
        }

        private void button18_Click(object sender, EventArgs e)
        {
            textBox1.Text = "0";
            result = 0;
        }

        private void operacja(object sender, MouseEventArgs e)
        {
            Button button = (Button)sender;

            operation = button.Text;
            result = double.Parse(textBox1.Text);
            textBox1.Clear();


        }

        private void button17_Click(object sender, EventArgs e)
        {
            textBox1.Text = "0";

        }

        private void button15_Click(object sender, EventArgs e)
        {
            switch (operation)
            {
                case "+":
                {
                        textBox1.Text = (result + double.Parse(textBox1.Text)).ToString();
                        if (textBox1.Text == "2137")
                        {
                            textBox1.Text = "AHAHAHHAHA 2137 CZAISZ PAPIEŻ UMAR JP2GMD";

                        }
                        break;
                    }
                case "-":
                    {
                        textBox1.Text = (result - double.Parse(textBox1.Text)).ToString();
                        break;
                        if (textBox1.Text == "2137")
                        {
                            textBox1.Text = "AHAHAHHAHA 2137 CZAISZ PAPIEŻ UMAR JP2GMD";

                        }
                    }
                case "*":
                    {
                        textBox1.Text = (result * double.Parse(textBox1.Text)).ToString();
                        break;
                        if (textBox1.Text == "2137")
                        {
                            textBox1.Text = "AHAHAHHAHA 2137 CZAISZ PAPIEŻ UMAR JP2GMD";

                        }
                    }
                case "/":
                    {
                        if(textBox1.Text=="0")
                        {
                            textBox1.Text = "nie dziel przez zero kurwo jebana";
                            break; }
                        else
                        textBox1.Text = (result / double.Parse(textBox1.Text)).ToString();
                        if(textBox1.Text=="2137")
                        {
                            textBox1.Text = "AHAHAHHAHA 2137 CZAISZ PAPIEŻ UMAR HAHAHAHAH";

                        }
                        break;
                    }

            }




        }
        void button3_Click(object sender, EventArgs e)
        {
            Form2 nowyFormularz = new Form2();
            nowyFormularz.Show();
            this.Hide();
        }
    }