Automatic Methods don't hold their values after postback

[Sintayehu]

//page load

 

protected void Page_Load(object sender, EventArgs e)

 

{

// check if StoreIt is not empty
if(setStoreIt.Equals("KeepItAlive")){
//Do something
}
}


public string storeIt{get; set}

private void setStoreIt()
{
    StoreIt = "KeepItAlive";
}

Unfortunately the setStoreIt Automatic Method gets reset everytime a postBack happenes.

I always used HiddenFields to get around this issue.

But today I am presented with an issue where i have to keep a <List> alive.

Any ideas?

Is this a problem with ajaxified pages?

Can I add the automatic method in the aJaxManajer? Ha Ha

Thanx!

[Mark Fitzpatrick]

They won't because you're not storing them anywhere. Once the page is done processing the local variables are destroyed. You have to store the data somewhere in order to retrieve it across postbacks. ASP.Net does provide a mechanism around this through the ViewState. Let's take a generic list of integer values

public List<int> myList
{
    get
        {
            if(myList != null)
                return (List<int>)ViewState["myList"];
            else
                return null;
                // you could also set it to return a new List<int> but I prefer nulls.
        }
        set
        { 
            ViewState["myList"] = value;
        }
}

You can store your own objects there as well so long as they are marked Serializeable on the class.