Question

i have a problem in MVC ASP.NET project.
i work with LINQ technology.When i want to insert one record to table,this error is shown.although insert action is preformed:**

ERROR:

Server Error in ‘/’ Application. The
parameters dictionary contains a null
entry for parameter ‘id’ of
non-nullable type ‘System.Int32’ for
method ‘System.Web.Mvc.ActionResult
Index(Int32)’ in
‘MVCJahan_oil.Controllers.getehController’.
An optional parameter must be a
reference type, a nullable type, or be
declared as an optional parameter.
Parameter name: parameters
Description: An unhandled exception
occurred during the execution of the
current web request. Please review the
stack trace for more information about
the error and where it originated in
the code.

controller methods for insert(create):

public ActionResult Index(int id)
{
    var query= from gete in l_class.getehs where gete.request_no == id select gete;
    this.Session["req_no"] = id; 
    return View(query.ToList());
}


[HttpPost]
public ActionResult Create([Bind(Exclude = "id")]geteh gte)
{
    try
    {

        l_class.getehs.InsertOnSubmit(gte);
        l_class.SubmitChanges();
        return RedirectToAction("Index", new { id = System.Convert.ToInt32  (Session["req_no"].ToString()) });
    }
    catch
    {
        return View();
    }
}

Answer 1

The problem is probably in the controller method that is called after the insert is performed. The method is expecting an int id parameter, but the redirect that is routed to the method isn’t passing an id value.