Accessing Page Class From Another Page Class

Question

How do I access a page class from another class. For example I have:

public partial class MyPage : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    { }
}

Why can I not access it from another class in App_Code folder?

public class MyClass
{
    public MyClass() {}
    public void DoSomething(object o)
    {
         // The following line won't compile.
         MyPage page = o as MyPage;
    }
}

I just figured it out (thanks to Fujiy) that for some reason this is the case with website project, but is not a problem with web application project in VS. If anyone has any clues as to why, please share your thoughts. Thank you :)

yeah me too, I just dumped it to VS to check for anything non-obvious :) — annakata
– annakata, Commented Jun 1, 2009 at 15:43

annakata · Accepted Answer · 2009-06-01 16:30:19Z

4

I see nothing wrong with your code as posted, most likely you've got a namespace problem.

edit: gah, just noticed that you mentioned this was a website project. It's been a while since I deigned to start one of those :) but I believe this stems from the fact that App_Code is run-time compiled. It would take a better man than me to explain why that creates the problem, but long story short I'd just avoid website projects in general.

edited Jun 1, 2009 at 16:30

answered Jun 1, 2009 at 15:42

annakata

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4 Comments

Lazarus Over a year ago

Code as posted works, must be namespace or you've a typo in your actual code.

g45rg34d Over a year ago

I get this error: The type or namespace name 'MyPage' could not be found (are you missing a using directive or an assembly reference?). Just created a new project to check if it will work - it doesn't. The namespaces are non-existent.

GalacticCowboy Over a year ago

In a website project, the namespaces are implicit based on the site structure. You'd need to explicitly identify the full path to the class you want to access, using "." instead of "/"...

annakata Over a year ago

@niaher - one of them is definitely in another namespace somehow I think your clearest way through is to check the object browser and/or put them in a namespace. Namespaces are good and intellisense is very good about helping you with them.

Daniel Chambers · Accepted Answer · 2009-06-01 15:48:21Z

2

You can do this, afaik:

System.Web.UI.Page page = System.Web.HttpContext.Current.Handler as System.Web.UI.Page;

Be careful where you call that though, because obviously at different points in your code the page won't be available. For example, Application_Start in global.asax.

answered Jun 1, 2009 at 15:48

Daniel Chambers

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