Where does Page Class Object gets created

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Hello,

Can anyone tell me how it is possible to use Page class properties and method without instantiating an Page Class object?

For Example -

C#

public partial class Login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack) //How do you use property of Page before you create "Page" class object
        {

        }

    }
}

Posted 15-Mar-14 5:53am

user413004

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OriginalGriff · Answer 1 · 2014-03-15T06:03:00

Solution 1

You don't have to.
Remember, your Login class is derived from Page, so everything Page contains, your class contains.
And the Page class contains a property "Page" which is preset for you when the base class constructor is executed - which happens before your class constructor, as you probably know!

Posted 15-Mar-14 6:03am

OriginalGriff

Comments

Nelek 15-Mar-14 17:44pm

1-Countered

user413004 17-Mar-14 2:10am

Can you explain this in more details?

I just wanted to get my basics right.

OriginalGriff 17-Mar-14 12:25pm

Yes, in effect.
It's not really complicated, but it has to do with the page lifecycle: basically every time the client talks to the server, the whole page is created, and the Load event is called, then any button click event and so on. Because your page is derived from the Page class, that happens with your page as part of that.

Have a look here:
http://msdn.microsoft.com/en-us/library/ms178472.aspx
which covers the events.