1-) C# RMOS - textboxa girilen değeri direk büyük harfe çevirir ToUpper

 private void txtSifre_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)

        {

            if (e.Handled = !char.IsUpper(e.KeyChar) && !char.IsControl(e.KeyChar))

            {

                e.Handled = true;

                int SatirBaslangic = txtSifre.SelectionStart;

                txtSifre.Text = txtSifre.Text.Insert(SatirBaslangic, e.KeyChar.ToString().ToUpper());

                txtSifre.Select(SatirBaslangic + 1, 0);

            }

        }