ASP.NET - Accessing Master Page elements form the Content Page

Question

Can the elements of the Master Page be accessed from the Content Page?

Lets say I have MasterPage1 and ContentPage1 that inherits from the MasterPage1, and the MasterPage1 has a button: Button1.

Can I change the property of that button from the content page, for example to make Button1 invisible, inactive etc? How can I accomplish this?

I am using .net2.0

Answer 1

Yes...if you need to do this from the aspx page using the MasterPage it would be:

Button myButton = (Button)Master.FindControl("myButton");
myButton.Visible = false;

Answer 2

You have to put a reference to the MasterPage in your page/user control markup.

<%@ Reference VirtualPath="..." %>

Then in the code-behind, you just cast the Page.MasterPage to your MasterPage and access its properties.

MyMasterPage myMasterPage = (MyMasterPage)Page.Master;