Question

In my MVC3 app, if i type in a query string value in the url and hit enter, I can get the value i typed:

localhost:34556/?db=test

My default action which will fire:

public ActionResult Index(string db)

The variable db has “test” in it.

Now, i need to submit a form and read the query string value, but when I submit the form via jQuery:

       $('#btnLogOn').click(function(e) {
         e.preventDefault();
             document.forms[0].submit();
         });

And the following is the form i’m sending:

   @using (Html.BeginForm("LogIn", "Home", new { id="form1" }, FormMethod.Post))

Heres the action:

  [HttpPost]
    public ActionResult LogIn(LogOnModel logOnModel, string db)
    {
        string dbName= Request.QueryString["db"];
     }

The variable dbName is null because Request.QueryString[“db”] is null, so is the variable db being passed in and i dont know why. Can someone help me get a query string variable after a form is submitted? Thanks

Answer 1

You could have something like

Controllers:

[HttpGet]
public ActionResult LogIn(string dbName)
{
    LogOnViewModel lovm = new LogOnViewModel();
    //Initalize viewmodel here
    Return view(lovm);

}

[HttpPost]
public ActionResult LogIn(LogOnViewModel lovm, string dbName)
{
    if (ModelState.IsValid) {
        //You can reference the dbName here simply by typing dbName (i.e) string test = dbName;
        //Do whatever you want here. Perhaps a redirect?
    }
    return View(lovm);
}

ViewModel:

public class LogOnViewModel
{
    //Whatever properties you have.
}

Edit: Fixed it up for your requirement.