Showing exception message from controller class to view page

If you want to show the error message on the same view:

[HttpPost]
public ActionResult Add(Model model)
{
    try
    {
        // some code...
        return RedirectToAction("Success");
    }
    catch (SomeException ex)
    {
        ModelState.AddModelError("", ex.Message);
        return View(model);
    }
}

and inside your Add.cshtml view you could use the ValidationSummary helper to display the error message:

@Html.ValidationSummary()

add model state error in HomeController.cs file catch section like

  try
  {
        methodThrowsError();
  }
  catch(SomeException ex)
  {
     ModelState.AddModelError("", ex);
  }
 return View(yourmodel);

and in cshtml page display error like

    @Html.ValidationSummary()

Here's an example of exception handling.

Just create a session variable in your controller AS :

public ActionResult DeleteConfirmed(int id)
    {
   try
        {
            //////whatever code u want
            return RedirectToAction("Index");
        }
        catch (Exception ex)
        {
            string m="mysession";
            Session["dep"] = m;}
return view();}

and use it as a flag variable.. then in your razor view Show your message as :

 if (Session["dep"] != null)
 { 
    <h1>Whatever message you want to show in your view</h1>

 }

Rate my answer please if it was helpfull

[HttpPost]
public ActionResult MethodName(Model model)
{
    try
    {
        // your business logic if need
        return RedirectToAction("Success");
    }
    catch (Exception ex)
    {
        ModelState.AddModelError("", ex.Message);
        return View(model);
    }
}