Accessing control from a master page asp.net - storing the value

Question

At the moment I have a master page and a content page. My master page consists of a dropdownlist, from which I need to select a child from. The content page loads according the child chosen. How should I store the dropdownvalue chosen?

I don't think I can use the session, since I would like the user to be able to open multiple tabs and watch different children contents at the same time. If I can use the session in this case, I'm not sure how.

I don't think I can use the viewstate since, although it solves my multiple tabs problem, the master page and content page have a different view state.

At the moment I am using a public static variable on the content page, and I set it in the master page. But from what I've heard static variables have their values stored throughout ALL the current sessions on the site.

Question: Can any one help me by suggesting which technology should I use?

I have also heard about the 'Application' object but I don't think it makes sense to use it.

Current working Code:

(content page)

public static string Child
    {
        get
        {
            if (child == null)
                return "-1";
            return child;
        }

        set
        {
            child = value;
        }
    }

(master page)

protected void ddlChooseChild_IndexChanged(object sender, EventArgs e)
        {
            ContentPage.Child = ddlChooseChild.SelectedValue;
        }

score 2 · Accepted Answer · answered Apr 18 '12 at 21:08

2

The best way to share data between different controls is to make use of the "Items" collection (which is a property of the HttpContext class). The collection is a Hashtable and can be accessed from your Page and User Controls like so:

Context.Items["Child"] = ddlChooseChild.SelectedValue;

answered Apr 18 '12 at 21:08

duncanportelli

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2

Thank you very much my friend! Solved it perfectly :) – test Apr 18 '12 at 21:14

score 1 · Answer 2 · edited May 23 '17 at 12:22

1

Unless you are restricting session by using PageID or something similar, Sessions are available on multiple tabs.

Check out this article, Master Content Page interaction

edited May 23 '17 at 12:22

Community

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answered Apr 18 '12 at 20:14

Habib

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I know the session is available on multiple tabs, but I want the SAME session variable to have different values on different tabs. Is this possible with session? – test Apr 18 '12 at 20:16
@test, something like this might help http://stackoverflow.com/questions/2840615/asp-net-session-multiple-browser-tabs-different-sessions – Habib Apr 18 '12 at 20:17
1

@test You can store an object in your session variable. Your object may contain whatever information you want any any number of tabs using lists, arrays, etc. – Jeremy Apr 18 '12 at 20:21

Accessing control from a master page asp.net - storing the value

2 Answers2