Exceptions in Enterprise Portal in MSDAX

Exceptions in Enterprise Portal are divided into three categories

• NonFatal 
The exception handling code should respond appropriately and allow the request to continue normally.

• AxFatal 
Indicates that an unrecoverable error has occurred in Enterprise Portal. Enterprise Portal content will not display. Content not related to Enterprise Portal should display as expected.

• SystemFatal 
Indicates that a serious error, such as out of memory, has occurred and the request must be aborted. Errors of this kind often cause an HTTP error code 500.

E.g.

 Try  
 {  
   // Code that may encounter exceptions goes here.  
 }  
 catch (System.Exception ex)  
 {  AxExceptionCategory exceptionCategory;  
   // Determine whether the exception can be handled.  
   if (AxControlExceptionHandler.TryHandleException(this, ex, out exceptionCategory) == false)  
   {  
     // The exception was fatal and cannot be handled. Rethrow it.  
     throw;  
   }  
   if (exceptionCategory == AxExceptionCategory.NonFatal)  
   {  
   // Application code to properly respond to the exception goes here.  
   }  
 }