If true generates a proxy class that maps each of the methods exposed with [CallbackMethod] on the current page, user control or control and exposes it as a client side class. The name of the class will be the same as the ID of the AjaxMethodCallback control.

By default the class is generated. If false the class is not generated and you can use the client side AjaxMethodCallback object and use declaritive code to create the method callbacks manually.

public ProxyClassGenerationModes GenerateClientProxyClass { get; set; }