namespace Labb6._3.Caesarchiffer
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void knappKrypt_Click(object sender, EventArgs e)
        {

            string encrypt = inmatningKrypt.Text;
            encrypt.ToLower();
            char[] array = encrypt.ToCharArray();

                for (int i = 0; i < array.Length; i++)
                {
                    int num = (int)array[i];
                    if (num >= 'a' && num <= 'z')
                    {
                        num += Convert.ToInt32(modifierare.Text);
                        if (num > 'z')
                        {
                            num = num - 26;
                        }
                    }
                    else if (num >= 'A' && num <= 'Z')
                    {
                        num += Convert.ToInt32(modifierare.Text);
                        if (num > 'Z')
                        {
                            num = num - 26;
                        }
                    }
                    array[i] = (char)num;
                }

                resultatKrypt.Text = new string(array).ToString();

                }

        private void knappDekrypt_Click(object sender, EventArgs e)
        {

                string decrypt = inmatningKrypt.Text;
                decrypt.ToUpper();
                char[] array = decrypt.ToCharArray();

            for (int i = 0; i < array.Length; i++)
                {
                    int num = (int)array[i];
                    if (num >= 'a' && num <= 'z')
                    {
                        num -= Convert.ToInt32(modifierare.Text);
                        if (num > 'z')
                            num = num - 26;

                        if (num < 'a')
                            num = num + 26;
                    }
                    else if (num >= 'A' && num <= 'Z')
                    {
                        num -= Convert.ToInt32(modifierare.Text);
                        if (num > 'Z')
                            num = num - 26;

                        if (num < 'A')
                            num = num + 26;
                    }
                    array[i] = (char)num;
                }

                resultatKrypt.Text = new string(array).ToString();





        }