CODEWITHSUNDEEP
c#asp.net
Daniel
Daniel

Reputation: 393

Data is added in front end every time the page is refreshed?

I have an application in ASP.NET MVC with a simple form which reads data from a file and shows the data in the form in browser.The issue is that every time I refresh the browser,the data from the file is added again in the front end.This is the controller where I have the issue:

public ActionResult Main(BankingModel _bm)
 {           
            ViewBag.List = IO.Read();
            return View(_bm);
 }

IO.Read reads the data from the file,stores it in the Viewbag and send it to the view.But the controller is called every time I refresh the page and the data from the browser remains,resulting in duplicated values.Is there a way,when I refresh thee browser,to also refresh the front end view data from the form?

Upvotes: 0

Views: 504

Answers (1)

Rahul Sharma
Rahul Sharma

Reputation: 8312

Regarding your particular case, you were not intiailzing a new instance of your List<BankingModel> which caused the data to be appended to the list always. The solution to this would be to initialize a new instance of your list inside the Read method:

public static List<BankingModel> lst = new List<BankingModel>()

And in order to clear your ViewBag since ViewBag maintains data on refresh, you can just call ViewData.Clear(); in your Controller method since ViewBag uses it internally.

Upvotes: 1

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