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 == A...
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