NET AJAX. If you inspect the individual JavaScript files that are dynamically
generated and loaded on the browser by the ScriptManager, you??™ll see references to the Sys
namespace. With that said, let??™s start by talking about the page life cycle and the
Sys.Application class.
Sys.Application
The Sys.Application class is an integral part of an ASP.NET AJAX page. After the initial
load of resources, including script files and other rendered components, from the server
onto the client, the Sys.Application class then manages the page life cycle. In fact, if you
view the source of any ASP.NET AJAX page, you would find the following script near the
bottom of the page:
CHAPTER 4 ?– ASP.NET AJAX CLIENT LIBRARIES 67
The call to the initialize() method, as the name suggests, initializes an instance of
the Application class by raising the load event, which then resides on the browser for the
remainder of the application life cycle. Therefore, the role and function of the Application
class is analogous to the role of the Page class in a typical ASP.
Pages:
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128