class TestHandlerFactory : IHttpHandlerFactory
{
public IHttpHandler GetHandler
(HttpContext context, string requestType, string url, string pathTranslated)
{
string fname = url.Substring(url.IndexOf('/')   1);
while (fname.IndexOf('/') != -1)
fname = fname.Substring(fname.IndexOf('/')   1);
string cname = fname.Substring(0, fname.IndexOf('.'));
string className ="";
className = "ClassLibrary831.CodeHandler";
object h = null;
try
{
//h = new TestHandler();
h = Activator.CreateInstance(Type.GetType(className));
}
catch (Exception e)
{
throw new HttpException("工厂不能为类型"   cname   "创建实例。", e);
}
return (IHttpHandler)h;
}
public void ReleaseHandler(IHttpHandler handler)
{
}
}(车延禄)

<httpHandlers>
<add verb="*" path
="default21.aspx,default22.aspx" type
="ClassLibrary831.TestHandlerFactory,
ClassLibrary831"></add>
</httpHandlers>