Session in JavaScript

Question

I am using MVC Core. In my application i want to set the Session value in JavaScript but it gives me error "Cannot implicitly convert type void to type object". When i get the Session Value then it working properly but when i set value of Session in JavaScript then it gives me the above error. Following is my JavaScript Code:

 

<script type="text/javascript">

var seconds = @HttpContextAccessor.HttpContext.Session.GetString("SessionSeconds");

var minutes = @HttpContextAccessor.HttpContext.Session.GetString("SessionMinutes");

var hours = @HttpContextAccessor.HttpContext.Session.GetString("SessionHours");

function CountDownSessionTime() {

if (seconds > 0) {

seconds = seconds - 1;

}

else

if (seconds == 0) {

@HttpContextAccessor.HttpContext.Session.SetString("SessionSeconds", "60");

minutes = minutes - 1;

}

}

 </script>

 

The first three lines are working in which i am getting values of Seconds, Minutes, and Hours which i have set in my Controller but in JavaScript i also want to set the value of Seconds in Session but it gives me error. The following line of code give me Error:

 

@HttpContextAccessor.HttpContext.Session.SetString("SessionSeconds", "60");

 

The above line give me error "Cannot implicitly convert type void to type object". Please give me an idea how i can set value of Session in JavaScript in MVC Core Application. Thanks