29个基本控件：
[AdRotator]
[BulletedList]
[Button]
[Calendar]
[CheckBox]
[CheckBoxLink]
[DropDownList]
[FileUpload]
[HiddenField]
[HyperLink]
[Image]
[ImageMap]
[Label]
[ListBox]
[Literal]
[MultiView]
[View]
[Panel]
[PlaceHolder]
[RadioButton]
[RadioButtonList]
[Substitution]
[TextBox]
[Wizard]
[Localize]
[Xml]
[ImageButton]
[LinkButton]
[Table]
