Is it possible to set MasterType programmatically?

A page could have an attribute MasterType to make Page.Master to be strong-typed:

<%@ MasterType VirtualPath="~/Site.master" %开发者_Go百科>

If all my pages inherits specific class inherited System.Web.UI.Page itself, can I someway get access to this.Master property in it so I could call master page's methods?

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In your base class that all pages inherit from, just override the Master property, something like this:

public new SiteMaster Master
{
  get { return base.Master as SiteMaster ; }
}

or abatishchev's own variant:

public new ISiteMaster Master
{
  get { return base.Master as ISiteMaster; }
}