Question

I have a master page with a method I use a lot from content page code behinds. In those code behinds, I have a method that gets duplicated a lot, so I thought I’ll put it in something I can inherit from. Unfortunately, I now can’t call the method in my master page code behind from the base class. I think I should know how and I’m probably being pretty stupid today but I can’t figure it out.

Here’s some code! Please ignore any howling errors, I just typed this off the top of my head 🙂

Master Page Code-behind

public partial class Site : MasterPage
{
    public void MyMethod()
    {
        // Do Something...
    }
}

Content (Child) Page

Declarative

<%@ MasterType VirtualPath="~/Site.Master" %>

Code-behind

Works

public class Test : Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        this.Master.MyMethod();
    }
}

Does Not Work

public class Test : TestClass
{
    protected void Page_Load(object sender, EventArgs e)
    {
        OtherMethod();
    }
}

public class TestClass : Page
{
    public void OtherMethod()
    {
        this.Master.MyMethod();
    }
}

Now, looking at it, I intuitively know “this.Master” can’t work but I don’t have any lightbulbs going off for an answer. How do I get the reference to my master page method back?

Thanks,
Richard

Answer 1

You have to cast this.Master to the type Site in order to access methods defined on Site : MasterPage.

public class TestClass : Page
{
    public void OtherMethod()
    {
        ((Site)this.Master).MyMethod();
    }
}