重定向到同一控制器中的另一个动作并传递一些数据asp.net mvc3

Question

I want to redirect to another action in same controller and pass one parameter value. I have this code:

public ActionResult Index()
{

}

public ActionResult SomeAction()
{
  if (isFailed)
  {
    // Redirect to Index Action with isFailed parameter so that some message gets displayed on Index page.
  }
 }

I read about using TempData but my session is read only (for some purpose) thus I if I save data in TempData in SomeAction , it does not help since TempData is empty in Index action.

Another thing I tried is using RedirectToAction("Index","Test", new { param = isFailed}) in return statement of SomeAction . This works and I can access param in Index action using Request.QueryString['param'] but the issue with this is the url now becomes /AreaName?param=true where I want it to be /AreaName/Test/ .

This is my routemap:

        context.MapRoute(
            "default",
            "AreaName/{controller}/{action}/{param}",
            new { controller="Test", action = "Index", param=UrlParameter.Optional },
        );

I am submitting a form using "post" from MyJS.js to SomeAction .

Is there any alternative/workaround method for doing this? In nutshell, I want these three things:

1. Redirect to Index action.
2. Pass the value of param from SomeAction to Index .
3. Keep the URL: http://localhost/AreaName/Test/

Answer 1

Try this

public ActionResult Index(Datatype param)
{

}
public ActionResult SomeAction()
{
if (isFailed) 
{
     return RedirectToAction("Index" , "Home",new{param= value });
}    
return View();
}

Answer 2

• Redirect to Index action.

Use return RedirectToAction("Index","Home");

• Pass the value of param from SomeAction to Index .

You can use the TempData object.

The TempData property value is stored in session state. Any action method that is called after the TempDataDictionary value is set can get values from the object and then process or display them. The value of TempData persists until it is read or until the session times out.

You can do it as below:

public ActionResult Index()
{
    //you can access TempData here.
}

public ActionResult SomeAction()
{
  if (isFailed)
  {
      TempData["Failure"] = "Oops, Error";  //store to TempData
      return RedirectToAction("Index" , "Home");
  }
  return View();
 }

This MSDN article explains it all.

• Keep the URL: http://localhost/AreaName/Test/

You can do so by adding a route in your RouteConfig.cs

context.MapRoute(
            "default",
            "AreaName/Test/",
            new { area = "AreaName" controller="Test", action = "Index"},
        );