Passing objects forth and back between ASP.NET pages.

[MY1201]

Hi there. I'm currently creating a site which behaves like a kind of "wizard". So I need to pass objects forth and back between the pages in the wizard. Now this works fine passing objects forth, but I have a problem passing objects back or have the page remembering objects between post backs. Here's some example code:

private MyObject \_myObject;

protected void Page\_Load(object sender, EventArgs e)
{
    // Context.Items\["MyObject"\] has been set by another page. 
    // An passed on using Server.Transfer()
    \_myObject = (MyObject)Context.Items\["MyObject"\]; 

    \_myObject.MyString = "Hello";
}

protected void Button1\_Click(object sender, EventArgs e)
{
    MyObjects.SaveMyObject(\_myObject);
}

Here's my problem: On my web form I have a button which calls "Button1_Click". Whenever this method is called I get a "NullReferenceException" from SaveMyObject - obviously because _myObject is null. But why? In the Page_Load method setting the MyString property to "Hello" works just fine. So my guess is that the page "forgets" the content of the context object between post backs. I guess I need to do something else. Is there some kind of solution to this problem? Best regards Soeren

[M LN Rao]

Try to place the Page_Load code in Button Click, perhaps it may solve your problem

[l0kke]

AFAIK, Context.Items is used to store values within one request. But you wrote, you can pass values between two pages, so I don't know, maybe I'm mistaken. Anyway, if you use Session object instead of Context.Items, it should works fine. Pilo