ASP.NET: Call function in MasterPage through UserControl

Question

Calling a function from the MasterPage in a Page is quite straigt forward but how do I call it for a UserControl:

Adding <%@ MasterType VirtualPath="~/MasterPage.master" %>, doesn't work on UserControls.

So this.Page.Master.MyFunction() fails :(

Answer 1

You have to cast the this.Page.Master first as the Master property of the Page is of type System.Web.UI.MasterPage.

e.g.

((MyMaster)this.Page.Master).MyFunction();

You could check the type of the underlying master page by adding a property to the code behind of the user control:

    public string MType
    {
        get { return this.Page.Master.GetType().FullName; }
    }

and print the result out in the User control markup, e.g. add this line to make it print out as a comment in the source code:

<!-- <%= MType %> //-->