Accessing a method from Mainpage

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I'm trying to access a method on my mainpage from another page. The mainpage method is "public". when I call it, I get an error "object reference not set to an instance of an object." It works fine from mainpage!! :confused:

Posted 21-Apr-10 11:11am

Jamespconnolly

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**Kunal Chowdhury «IN»** · Answer 1 · 2010-04-22T07:01:00

Are you navigating from one page to another? If that is the case, then you can't directly do. You have to create the instance of the MainPage and then you can call the public method:

MainPage mainPage = new MainPage();<br />
mainPage.DoCall();<br />

If your mainpage is still loaded in memory as the base page & on top of it if you are loading any UserControl then you can easily access it from the instance.

If this solves your problem, please "Mark As Answer", and if you are using some other mechanism to load one page from another, please elaborate the same. It will be easier for us to help you out.

Thank you for posting in CodeProject.

Abhinav S · Answer 2 · 2010-04-23T21:13:00

Solution 3

You need to post some code here - some object in your main page might be null and if someone here looks at the code, they might be able to give you a solution.

Posted 23-Apr-10 21:13pm

Abhinav S

AspDotNetDev · Answer 3 · 2010-04-21T11:50:00

Solution 1

How are you accessing the main instance of MainPage? I suspect it is set to null.

Posted 21-Apr-10 11:50am

AspDotNetDev