CompiledTemplateBuilder Class

I'm not sure why this article says this class is not meant to be used from your code.  I find it very useful when dynamically loading a custom templated user control that has other child controls.  For example:

protected void Page_Init(object sender, EventArgs e)
{
    var uc = (MyUserControl)this.LoadControl("MyUserControl.ascx");
    uc.MyTemplate = new CompiledTemplateBuilder(
        c =>
        {
            // add whatever controls you want
            c.Controls.Add(new Literal { Text = "testing<br>" });
            c.Controls.Add(new TextBox());
        });
    this.phSomePlaceHolder.Controls.Add(uc);
}

In this case, MyUserControl is a simple templated control without any custom naming container.  It just has a single placeholder that the template is instantiated in.

Since the docs for ITemplate state "This interface is used by custom server controls, but never implemented by them. ASP.NET always implements it." - then this CompiledTemplateBuilder control should be the recommended implementation, rather than being discouraged from use.

There is some older documentation which talks about creating your own template class here:
http://msdn.microsoft.com/en-us/library/y0h809ak(v=vs.71).aspx
I find this to be unnecessary and confusing most of the time.  Using CompiledTemplateBuilder as shown above is much easier.