After registering the DynamicMasterPage class, every page in your application automatically inherits from the new base class.
Every page inherits the new OnPreInit() method and every page loads a Master Page dynamically.
File: DynamicMasterPage.cs
using System;
using System.Web.UI;
using System.Web.Profile;
public class DynamicMasterPage : Page
{
protected override void OnPreInit(EventArgs e)
{
this.MasterPageFile = (string)Context.Profile["MasterPageFile"];
base.OnPreInit(e);
}
}
After you create a new base Page class, you need to register it in the web configuration file.
defaultValue="Dynamic1.master" />