IPostBackDataHandler Interface
.NET Framework 3.0
Defines methods that ASP.NET server controls must implement to automatically load postback data.
Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
You must implement the IPostBackDataHandler interface when creating a server control that needs to examine form data that is posted back to the server by the client. The contract that this interface defines allows a server control to determine whether its state should be altered as a result of the postback, and to raise the appropriate events. For more information, see Server Event Handling in ASP.NET Web Pages.
The following code example demonstrates a custom text box server control that implements the IPostBackDataHandler interface. The Text property is changed as a result of the postback, and the server control raises a TextChanged event after postback data has been loaded.
- AspNetHostingPermission for operating in a hosted environment. Demand value: LinkDemand; Permission value: Minimal.
- AspNetHostingPermission for operating in a hosted environment. Demand value: InheritanceDemand; Permission value: Minimal.
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