Accessing a contentplaceholder on a master page

Question

I am trying to access a content placeholder from Site.Master.cs code-behind. I tried the following:

ContentPlaceHolder cph = (ContentPlaceHolder)this.FindControl("MainContent");

and

ContentPlaceHolder cph = (ContentPlaceHolder)this.Master.FindControl("MainContent");

But it gives me an error and when I tried debugging and this.Controls has objects but not "MainContent"

How can I access the master page placeholder controls?

Answer 1

Since the ContentPlaceHolder is in the markup and the code behind you're modifying is for the same page, you can access it directly.

var cph = MainContent;

Of course, probably no need to assign it to a variable since it's already in scope.

MainContent.Visible = false;