Show message “Email sending failed/successful” asp.net mvc 4 via ViewBag - asp.net

Question

I have feedback form on my mvc site and I send this form to email.
I'd like to show error message in case email sending is failed and success message in case email sending is successful. I try to make that via ViewBag.
I added in my controller
[HttpGet]
public ActionResult Feedback(string Message)
{
if (Message != null)
{
if (Message == "No")
{
ViewBag.Message = "Error";
}
if (Message == "Yes")
{
ViewBag.Message = "Success";
}
}
else
{
ViewBag.Message = null;
}
return View();
}
[HttpPost]
public ActionResult Feedback(FeedbackForm Model)
{
string Message;
//email
System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
msg.BodyEncoding = Encoding.UTF8;
msg.Priority = MailPriority.High;
msg.From = new MailAddress(Model.Email, Model.Name);
msg.To.Add(/*"evaluation#corepartners.ru"*/"tayna-anita#mail.ru");
msg.Subject = #Resources.Global.Feedback_Email_Title + " " + Model.Company;
string message = #Resources.Global.Feedback_Email_From + ": " + Model.Name + "\n"
+ #Resources.Global.Feedback_Email + ": " + Model.Email + "\n"
+ #Resources.Global.Feedback_Phone + ": " + Model.Phone + "\n"
+ #Resources.Global.Feedback_Company + ": " + Model.Company + "\n\n"
+ Model.AdditionalInformation;
msg.Body = message;
msg.IsBodyHtml = false;
//Attachment
if (Model.ProjectInformation != null && !(String.IsNullOrEmpty(Model.ProjectInformation.FileName)))
{
HttpPostedFileBase attFile = Model.ProjectInformation;
if (attFile.ContentLength > 0)
{
var attach = new Attachment(attFile.InputStream, attFile.FileName);
msg.Attachments.Add(attach);
}
}
SmtpClient client = new SmtpClient("denver.corepartners.local", 55);
client.UseDefaultCredentials = false;
client.EnableSsl = false;
try
{
client.Send(msg);
return RedirectToAction("Feedback", "Home", Message = "Yes");
}
catch (Exception ex)
{
return RedirectToAction("Feedback", "Home", Message = "No");
}
}
and I added in my view
#if (ViewBag.Message != null)
{
<p style="color: red;">#ViewBag.Message</p>
}
but I don't get any message in any case.
What's wrong?

Answer 1

Try this:
return RedirectToAction("Feedback", "Home", new { Message = "Yes" });