How to call host page javascript function inside iframe?

parent.testmethodname();

RESTful ASP.NET WCF / jQuery - JSON Service with GET, POST, PUT and DELETE

http://www.eggheadcafe.com/tutorials/aspnet/b480ba4e-b59c-43d4-ac4b-2990ca19daec/restful-aspnet-wcf--jquery--json-service-with-get-post-put-and-delete.aspx

Using JQuery Validation With ASP.NET Web Forms

Using JQuery Validation With ASP.NET Web Forms

How to Implement Trackback Handler in ASP.NET MVC

http://www.nayyeri.net/how-to-implement-trackback-handler-in-asp-net-mvc

Overriding Unobtrusive Client Side Validation Settings in ASP.NET MVC 3

http://weblogs.asp.net/imranbaloch/archive/2011/07/13/overriding-unobtrusive-client-side-validation-settings-in-asp-net-mvc-3.aspx