This method takes in two
parameters, the name of the component and the ID of the parent component (if any).
In the following script, we check for the existence of a control called CustomComponent in a
parent control with the ID of Panel1.
?– Note You can use $find as a shortcut to Sys.Application.findComponent. This is one of many
global shortcuts in the ASP.NET AJAX Client Library.
Table 4-12 contains a list of methods in the Application.Sys class.
Table 4-12.Methods of the Sys.Application Class
Method Name Description
addComponent Creates and initializes a component with the Application object
dispose Releases all dependencies held by the objects in the page
findComponent Finds and returns the specified component object
getComponents Returns an array of all components that have been registered in the
page using the addComponent method
initialize Initializes the Application object
notifyScriptLoaded Boolean value indicating whether all the scripts have been loaded
queueScriptReference Used to queue script files that will be loaded in a sequential order
raiseLoad Raises the load event
registerDisposableObject Registers an object/component with the application and manages
the object requiring disposal
removeComponent Removes an object from the application or disposes the object if it
is disposable
unregisterDisposableObject Removes/unregisters a disposable object from the application
CHAPTER 4 ?– ASP.
Pages:
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131