System.Web 2.0.0.0 System.Delegate `` System.String To be added. To be added.

The delegate, in combination with the method, is used for rendering post-cache content for the and controls.

For the control, use the property to specify the name of the callback method to invoke when the control executes. The callback method that you specify must be a static method on the page or on the user control that contains the control. The signature for the callback method must match the signature for an delegate that takes an parameter and returns a string.

For the control, rendering is independent of the page caching unless an event handler is provided for the event. If no event handler is present, post-cache substitution is used to render the content.

Represents the method that handles post-cache substitution.