Working On TempData in MVC

First understand the functional overview of Tempdata.

Tempdate is used to pass the data from different action to action (we can say it preserves the data in subsequent requests)

Consider below example

You have an two action methods as below

public class TestController : Controller
{
// GET: Test
public ActionResult Index()
{
TempData["Name"] = "Rupesh";
return RedirectToAction("Demo");
}
public ActionResult Demo()
{
return View();
}
}

So if you run the application and access Test/index method then it will redirect to Demo() method & from demo() method we are just returning View.

demo.cshtml as follows

@{
Layout = null;
}
>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Demotitle>
head>
<body>
@{
TempData.Keep("Name");
}
<div>
@TempData["Name"]
div>
body>
html>

We have called our tempdata value on View (which is called from Demo() action method) In this view our value of tempdate will be display.

You can keep the value as I have written keep method so you can use this tempdata value in further action / sub sequent request as well.

Here I have covered first senarion

___________________________________________________________________

Second senario

Now I am writing one action link which will redirect to new action method called DoMethod() in same controller & return some content.

Modified demo.cshtml

@{
Layout = null;
}
>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Demotitle>
head>
<body>
@{
TempData.Keep("Name");
}
<div>
@TempData["Name"]
div>
<br />
<br />
@Html.ActionLink(
"Do Method execute", // linkText
"DoMethod", // action
"test", // controller
null // htmlAttributes
)
body>
html>

add method in controller as, your modifed controller will be as below

public class TestController : Controller
{
// GET: Test
public ActionResult Index()
{
TempData["Name"] = "Rupesh";
return RedirectToAction("Demo");
}
public ActionResult Demo()
{
return View();
}
public ActionResult DoMethod()
{
return Content(TempData["Name"].ToString());
}
}

Now run the code and access Test/Index from browser, you will see first value from tempdate.

Now click on hyperlink Do Method execute it will redirect to DoMethod call & will return content i.e tempdata value.

Let me know if any question.

3 Replies

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Gajendra Jangid7y ago
hello dear,

please have a look below links:

https://www.codeproject.com/Articles/786603/Using-TempData-in-ASP-NET-MVC
https://www.tutorialsteacher.com/mvc/tempdata-in-asp.net-mvc
https://www.dotnetcurry.com/aspnet-mvc/1074/aspnet-mvc-pass-values-temp-data-session-request
Sourav Kumar Das7y ago
Hi Sarbeshwara,

Check out the below link for understanding the TempData..

https://www.c-sharpcorner.com/blogs/viewdata-vs-viewbag-vs-tempdata-in-mvc1

https://www.c-sharpcorner.com/blogs/difference-between-viewdata-viewbag-and-tempdata1
Rupesh Kahane7y ago
First understand the functional overview of Tempdata.

Tempdate is used to pass the data from different action to action (we can say it preserves the data in subsequent requests)

Consider below example
You have an two action methods as below
public class TestController : Controller
   {
       // GET: Test
       public ActionResult Index()
       {
           TempData["Name"] = "Rupesh";
           return RedirectToAction("Demo");
       }

       public ActionResult Demo()
       {
           return View();
       }
   }
So if you run the application and access Test/index method then it will redirect to Demo() method & from demo() method we are just returning View.

demo.cshtml as follows
@{
    Layout = null;
}

>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Demotitle>
head>
<body>
@{
    TempData.Keep("Name");
}
<div>
    @TempData["Name"]
div>
body>
html>
We have called our tempdata value on View (which is called from Demo() action method) In this view our value of tempdate will be display.

You can keep the value as I have written keep method so you can use this tempdata value in further action / sub sequent request as well.

Here I have covered first senarion
___________________________________________________________________

Second senario

Now I am writing one action link which will redirect to new action method called DoMethod() in same controller & return some content.

Modified demo.cshtml
@{
    Layout = null;
}

>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Demotitle>
head>
<body>
    @{
        TempData.Keep("Name");
    }
    <div>
        @TempData["Name"]
    div>
    <br />
    <br />
    @Html.ActionLink(
        "Do Method execute", // linkText
        "DoMethod", // action
        "test",                    // controller
        null // htmlAttributes
        )
body>
html>
add method in controller as, your modifed controller will be as below
public class TestController : Controller
   {
       // GET: Test
       public ActionResult Index()
       {
           TempData["Name"] = "Rupesh";
           return RedirectToAction("Demo");
       }

       public ActionResult Demo()
       {
           return View();
       }

       public ActionResult DoMethod()
       {
           return Content(TempData["Name"].ToString());
       }
   }
Now run the code and access Test/Index from browser, you will see first value from tempdate.
Now click on hyperlink Do Method execute it will redirect to DoMethod call & will return content i.e tempdata value.

Let me know if any question.