Exceptions from business logic layer not caught in Application_Error

Hi all,


I know there are a few posts on this issue already, however I haven't found the answers I was really looking for.
My situation is like this: I have a DLL project containing my business logic. Then I have a web application that refers to this DLL, and calls a function from it. And I have a global.asax which handles errors on Application_Error

Sample:
// MyWebsite.aspx.cs

using MyBusinessLogic;

protected void Page_Load(object sender, EventArgs e)
{
    MyBusinessLogicClass.DoSomething();
}


// global.asax.cs
protected void Application_Error(object sender, EventArgs e)
{
    // do my error handling here, i.e. get complete error message and stacktrace and send it to me by mail
}


First of all, I need to know one thing: is Application_Error even SUPPOSED to catch any and all and every exception that may ...