代码
function OnClickLogin()有了上篇和前面的介绍，现在这段代码应该比较容易理解了。程序一开始创建几个全局变量。接下来是pageLoad()函数，这个函数将在客户端应用程序加载完毕后被ASP.NET AJAX客户端框架自动调用。在此函数中，我们仅为前面定义的几个全局变量关联上当前页面中的相应元素。
{
SetDefaultLoginCompletedCallBack();
SetDefaultLogoutCompletedCallBack();
SetDefaultFailedCallBack();
Sys.Services.AuthenticationService.login(username.value,
password.value, false,null,null,null,null,"User Context");
}
function OnClickLogout()
{
Sys.Services.AuthenticationService.logout(null,
null, null, null);
}
function OnFailed(error,
userContext, methodName)
{
DisplayInformation("error:message = " +
error.get_message());
DisplayInformation("error:timedOut = " +
error.get_timedOut());
DisplayInformation("error:statusCode = " +
error.get_statusCode());
}
function OnLoginCompleted(validCredentials,
userContext, methodName)
{
password.value = "";
if (validCredentials == true)
{
username.value = "";
buttonLogin.style.visibility = "hidden";
usernameEntry.style.visibility = "hidden";
passwordEntry.style.visibility = "hidden";
textNotLoggedIn.style.visibility = "hidden";
buttonLogout.style.visibility = "visible";
textLoggedIn.style.visibility = "visible";
DisplayInformation("");
}
else
{
textLoggedIn.style.visibility = "hidden";
textNotLoggedIn.style.visibility = "visible";
DisplayInformation(
"Login Credentials Invalid. Could not login");
}
}
function OnLogoutCompleted(result)
{
usernameEntry.style.visibility = "visible";
passwordEntry.style.visibility = "visible";
textNotLoggedIn.style.visibility = "visible";
buttonLogin.style.visibility = "visible";
buttonLogout.style.visibility = "hidden";
textLoggedIn.style.visibility = "hidden";
}
function DisplayInformation(text)
{
//…………（省略：负责在页面下方提示行是显示相应信息）
}
if (typeof(Sys) !== "undefined") Sys.Application.notifyScriptLoaded();
