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copied!<p>See <a href="http://odetocode.com/blogs/scott/archive/2005/07/16/mastertype-in-asp-net-2-0.aspx" rel="nofollow">article</a> here.</p> <p>Here is something nice that comes from the new compilation model in ASP.NET 2.0. Let’s say you add a custom property to a master page code-behind file like so:</p> <pre><code>partial class otcMaster : System.Web.UI.MasterPage { public string FooterText { get { return Footer.Text; } set { Footer.Text = value; } } } </code></pre> <p>You can get to the master page for a web form using the inherited Master property, which returns a MasterPage reference. To get to a property defined in otcMasterPage though, you might think you need to use a cast.</p> <pre><code>((otcMaster)Master).FooterText == "foo" </code></pre> <p>Casting to a derived type is just a part of life when using frameworks and statically typed languages, but there is a better way. Use the @ MasterType directive in the ASPX.</p> <pre><code><%@ MasterType VirtualPath="~/otc.master" %> </code></pre> <p>Now when ASP.NET codegens the page, it puts the following inside a partial class definition. Notice the Shadows keyword (that would be the new keyword in semicolon land [yeah, I’m experimenting with alternative languages]).</p> <pre><code>public new otc Master { get { return (otcMaster)base.Master; } } </code></pre> <p>The result is a strongly typed Master Page. We don’t need a cast, we can go right to the Master.FooterText property. Another way to do this is to specify a TypeName in the @MasterType directive. </p>

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