mvc-how to Pass values from controller to controller?

In this technique you store the data to be passed in the TempData dictionary in the sender action method. The receiving action method reads the data from the TempData dictionary. You might be aware that TempData dictionary can hold data till it is read and this can carry data across multiple requests. The following code shows how this is done:

As you can see Index() action instantiates a Customer object as before. This time, however, it stores the Customer object in a TempData key named mydata. The RedirectToAction() method is then used to take the control to the Index() action of Home2 controller.

 

Inside the Index() of Home2, you can read the value as follows:

TempData is used when you are redirecting from one controller action to another controller action. In your code there is no redirection happening. Both the Controller actions are returning views.

 

If I am correct, you want to store the PatientCode selected in Controller1 somewhere so that you can use that is Controller2.

 

To be able to do this I think you should use Session variable. You can store "PatiendCode" in Session from Controller1 and retreive it in Controller 2. 

 

 

This is my code.But it takes null value to the second contoller

Controller1: 

public ActionResult ExaminePatient(string PatientCode)

{

List itemList = new List();

ExaminePatient examine = new ExaminePatient();

ExamineVm vm = new ExamineVm();

ExamineLoadingValues drop = new ExamineLoadingValues();

vm.Status = drop.Statusload();

itemList = drop.Visitinfo(PatientCode);

ViewData["itemList"] = itemList;

if(PatientCode!=null)

{

patcode = PatientCode.ToString();

ViewBag.patcode = patcode;

TempData["patcode"] = patcode;

}

return View("ExaminePatient", vm);

}

 

Controller2:

 

Hi Akshaya, 

 

Hope you are doing well 

 

If your passing Value from one controller to another controller directly the you can use TempData it will be an best soution for you.