System.Web.UI (system.web.dll)interface

This interface, which is implemented by many ASP.NET Server Controls, allows a control to receive and process postback data. It consists of two methods. The first, LoadPostData( ), allows a control to receive the form data and update its properties as required. ASP.NET calls this method automatically on postback. It provides form data as a collection in the postCollection argument and a postDataKey argument identifying the control's key (i.e., postCollection(postDataKey) will contain the posted information for the control). The control returns True from this method to indicate that its state has changed, or False if it hasn't. ASP.NET calls the second method, RaisePostDataChangedEvent( ), automatically after LoadPostData( ) if the control's state is changed. The control can use this method to raise any required events. Events should never be raised from the LoadPostData( ) method because other controls may not have loaded their state information yet.

public interface IPostBackDataHandler {
// Public Instance Methods
   public bool LoadPostData(string postDataKey, System.Collections.Specialized.NameValueCollection postCollection);
   public void RaisePostDataChangedEvent( );

Implemented By

Multiple types

    Part I: Introduction to ASP.NET
    Part III: Namespace Reference
    Chapter 40. The System.Web.UI.MobileControls Namespace
    Chapter 42. The System.Web.UI.WebControls Namespace