Save variable value while navigation in MVC

Question

I am having one page ABC.cshtml. In the page I have written code for multiple modal popup with "Back" and "Next" buttons. when I click on buttons it navigates from one modal to another.

I am having "Id" which I need to persist when I navigate from one modal to another but "Id" became null.

I have used Tempdata/Viewdata/Viewbag/Hidden field to persist data but no use. I cant use session to save state here. Is there any other way to do this?

Can someone help me to solve this issue?

Thanks in advance.

Session State will be blocked if concurrent async ajax requests are executed, it will affect performance. — user2148124, Jul 07 '18 at 16:11

Ray Krungkaew · Accepted Answer · 2018-07-07T13:52:14.730

You could use cache

Add System.Runtime.Caching

//Add cache named Key1. It will expire in 10 minute
CacheWrapper.Add("Key1", new List<int>(), 10);

//Get the cache
var result = CacheWrapper.Get<List<int>>("Key1");

//Delete the cache
CacheWrapper.Delete("Key1");

Create wrapper class like this

public class CacheWrapper
{
    private static ObjectCache cache = null;

    public static ObjectCache Cache
    {
        get
        {
            if (cache == null)
            {
                cache = MemoryCache.Default;
            }
            return cache;
        }
    }

    public static void Add(string key, object data, double expireInMinute)
    {
        Delete(key);
        Cache.Add(key, data, DateTime.Now.AddMinutes(expireInMinute));
    }

    public static object Get(string key)
    {
        if (!Cache.Contains(key))
            return null;
        return Cache[key];
    }

    public static void Delete(string key)
    {
        if (Cache.Contains(key))
        {
            Cache.Remove(key);
        }
    }
}

Cache is application wide, it is shared across all sessions and this is one of the main difference between session and cache. I am not sure this will solve the original question when there are multiple sessions of the application. — Thangadurai, Jul 08 '18 at 05:16

score 0 · Answer 2 · answered Jul 07 '18 at 13:33

0

You can use a Hidden Field

<input type="hidden" name="Language" value="English">

In asp.Net:

<asp:HiddenField id="Language" runat="server" value="English"/>

answered Jul 07 '18 at 13:33

F. Iván

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sorry i forgot to mention in the question but I have tried hidden fields as well – user2148124 Jul 07 '18 at 13:34

Save variable value while navigation in MVC

2 Answers2