private void btnback_Click(object sender, EventArgs e)
        {
            Question3 fq3 = new Question3();

            fq3.Show();
            this.Hide();
        }
        private void btnnext_Click(object sender, EventArgs e)
        {
            int countans = 0;


            if (checkmatkul1.Checked == false && txbmatkul1.Text != "")
            {
                ValueGetSet.is251 = Convert.ToDouble(txbmatkul1.Text);
                countans++;
            }
            else if (checkmatkul1.Checked == true)
            {
                countans++;
            }

            if (checkmatkul2.Checked == false && txbmatkul2.Text != "")
            {
                ValueGetSet.is255 = Convert.ToDouble(txbmatkul2.Text);
                countans++;
            }
            else if (checkmatkul2.Checked == true)
            {
                countans++;
            }

            if (checkmatkul3.Checked == false && txbmatkul3.Text != "")
            {
                ValueGetSet.is341 = Convert.ToDouble(txbmatkul3.Text);
                countans++;
            }
            else if (checkmatkul3.Checked == true)
            {
                countans++;
            }

            if (checkmatkul4.Checked == false && txbmatkul4.Text != "")
            {
                ValueGetSet.is388 = Convert.ToDouble(txbmatkul4.Text);
                countans++;
            }
            else if (checkmatkul4.Checked == true)
            {
                countans++;
            }

            if (checkmatkul5.Checked == false && txbmatkul5.Text != "")
            {
                ValueGetSet.ik402 = Convert.ToDouble(txbmatkul5.Text);
                countans++;
            }
            else if (checkmatkul5.Checked == true)
            {
                countans++;
            }

            if (checkmatkul6.Checked == false && txbmatkul6.Text != "")
            {
                ValueGetSet.is403 = Convert.ToDouble(txbmatkul6.Text);
                countans++;
            }
            else if (checkmatkul6.Checked == true)
            {
                countans++;
            }

            if (checkmatkul7.Checked == false && txbmatkul7.Text != "")
            {
                ValueGetSet.is431 = Convert.ToDouble(txbmatkul7.Text);
                countans++;
            }
            else if (checkmatkul7.Checked == true)
            {
                countans++;
            }



            if (countans != 0)
            {
                ValueGetSet.statequestion2 = true;
                countans = 0;
            }

            Question3 fq3 = new Question3();

            fq3.Show();
            this.Hide();
        }