Hi Cisco,
Thank you for your update.
I think using an HttpModule here is reasonable. Following is the official
MSDN documentation about ASP.NET Required ACLs:
#ASP.NET Required Access Control Lists (ACLs)
http://msdn2.microsoft.com/en-us/library/kwzs111e.aspx
Another approach in my opinion would be using a timer to check the hardware
periodically, and sets an application variable when the check failed. You
check the application variable in Application's OnBeginRequest event, if it
failed, threw an exception.
Some example code:
void Application_Sta rt(object sender, EventArgs e)
{
Timer t = new Timer(3000);
t.Enabled = true;
GC.KeepAlive(t) ;
t.Elapsed += new ElapsedEventHan dler(t_Elapsed) ;
Application["timer"] = t;
}
void t_Elapsed(objec t sender, ElapsedEventArg s e)
{
if (checkHardwareF ailed()) {
Application["failed"] = "1";
// you might then disable the timer since the application needs
restart anyway
}
}
void Application_OnB eginRequest(obj ect sender, EventArgs e)
{
string status = Application["failed"] as string;
if (status == "1")
{
throw new Exception("Hard ware check failed!");
}
}
This way you don't need to use an HttpModule and don't need to modify
web.config or machine.config.
Hope this helps. Please feel free to post here if anything is unclear.
Regards,
Walter Wang
Microsoft Online Community Support
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