Question:You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5.
You create a Web form by using ASP.NET AJAX.
You write the following client-script code fragment to handle the exceptions thrown from asynchronous postbacks:
01 <script type="text/javascript">
02 function pageLoad()
03 {
04 var pageMgr =
05 Sys.WebForms.PageRequestManager.getInstance();
06 â–º
07 }
08
09 function errorHandler(sender, args)
10 {
11 â–º
12 }
13 </script>
You need to ensure that the application performs the following tasks:
use a common client-script function named errorHandler.
udpdate a Label control that has an ID named lblError with the error message.
prevent the browser from displaying any message box or Javascript error.
What should you do?
A Insert the following code segment at line 06.
pageMgr.add_endRequest(errorHandler);
Insert the following code segment at line 11.
if (args.get_error() != null) {
get('lblError').innerHTML = args.get_error().message;
args.set_errorHandled(true);
}B Insert the following code segment at line 06.
pageMgr.add_endRequest(errorHandler);
Insert the following code segment at line 11.
if (args.get_error() != null) {
$get('lblError').innerHTML = args.get_error().message;}C Insert the following code segment at line 06.
pageMgr.add_pageLoaded(errorHandler);
Insert the following code segment at line 11.
if (args.get_error() != null) {
get('lblError').innerHTML = args.get_error().message;
args.set_errorHandled(true); }D Insert the following code segment at line 06.
pageMgr.add_pageLoaded(errorHandler);
Insert the following code segment at line 11.
if (args.get_error() != null) {
$get('lblError').innerHTML = args.get_error().message;}
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