Microsoft ASP.NET Programming with Microsoft Visual Basic .NET Version 2003 Step by Step [Electronic resources]

G. Andrew Duthie

نسخه متنی -صفحه : 126/ 71

Chapter 10 Quick Reference

To	Do this
Inherit from a baseclass	Add the Inherits keyword on the line after the class definition, specifying the name of the class to inherit.
Render output from acontrol	Override the Render method of the control class from which the custom control is derived. To take advantage of the rendered output of controls such as TextBox and Label, call the Render method of the base class when you are finished rendering customoutput.
Handle postbacks	Implement the IPostBackDataHandler and/or IPostBackEventHandler interfaces, and implement the methods defined by the interfaces.
Maintain state in a custom control	Store state in and retrieve state from the ViewState object in your property procedures.

Do this

Inherit from a baseclass

Add the Inherits keyword on the line after the class definition, specifying the name of the class to inherit.

Render output from acontrol

Override the Render method of the control class from which the custom control is derived. To take advantage of the rendered output of controls such as TextBox and Label, call the Render method of the base class when you are finished rendering customoutput.

Handle postbacks

Implement the IPostBackDataHandler and/or IPostBackEventHandler interfaces, and implement the methods defined by the interfaces.

Maintain state in a custom control

Store state in and retrieve state from the ViewState object in your property procedures.