VMProtect v3.4.0.1155

            string error = null;
            try
            {
                error = Validate(textBox1.Text);
            }
            catch
            {
                label2.ForeColor = Color.Red;
                label2.Text = "invalid serial";
            }
            finally
            {
                if (error != null)
                {
                    label2.ForeColor = Color.DarkGreen;
                    label2.Text = string.Format("hi {0} thanks for registering", error);
                }
            }