for (int i = 0; i < textBox2.Text.Length; i++)
            {
                if (((textBox2.Text[i] >= 'a') && (textBox2.Text[i] <= 'z')) || ((textBox2.Text[i] >= 'A') && (textBox2.Text[i] <= 'Z')))
                {
                    string y = "true";
                    break;
                }
            }

            else if ((x == "true") | (y == "true"))
            {

            }