MVC :: Get Executing Application Namespace?

What's the most effective way to get the currently executing (http) application?

Specifically, this is an MVC application, so the application is inheriting System.Web.HttpApplication. However, the name of this class can be anything. So the solution would involve using a generic method, without knowing the Application class name.

Currently the following the code works:
public string GetApplicationNamespace()
{
string applicationNamespace = string.Empty;
Assembly execAsm = Assembly.GetExecutingAssembly(); //current exec assembly
Type[] execAsmTypes = execAsm.GetTypes(); //list of exec assembly types
foreach (Type type in execAsmTypes)
{
if (type.BaseType == typeof(HttpApplication))
{
applicationNamespace = type.Namespace;
break;
}
}
}

A loop is used to find the Application type and identify the namespace. Is there a more efficient or concise way to do this? It would be highly desireable to do this without needing to pass in any argument.