private void Btn_login_Click(object sender, EventArgs e) { API_Controller api = new API_Controller(); string obj = api.getAllAdmins(); string nonHashPassword = Txt_password.Text; var data = Encoding.ASCII.GetBytes(nonHashPassword); var sha1 = new SHA1CryptoServiceProvider(); var sha1data = sha1.ComputeHash(data); string hashedPassword = System.Text.Encoding.UTF8.GetString(sha1data); if (api.logInAdmin(obj, Txt_email.Text, hashedPassword)) { this.Close(); } }