HandleExceptionAttribute

Global MVC exception filter that logs unhandled action exceptions with full request diagnostic context and redirects non-AJAX requests to the shared error page, while never itself throwing regardless of logging outcome.

Purpose

• Global MVC exception filter that logs unhandled action exceptions with full request diagnostic context and redirects non-AJAX requests to the shared error page, while never itself throwing regardless of logging outcome.
• Depends on a property-injected ILogService supplied by Autofac's MVC filter provider; when that service or the filter context is missing, the filter silently does nothing.

Context

• Namespace: SAIF.Web.Mvc
• Assembly/package: SAIF.Framework.Web.Mvc (source-shipping NuGet package)
• Kind: class (MVC exception filter)

Public members

Member	Signature	Purpose
LogService	public ILogService LogService { get; set; }	Property-injected logging service used to record the exception and its request context.
OnException(ExceptionContext)	public override void OnException(ExceptionContext filterContext)	Builds diagnostic state, logs the exception, and redirects non-AJAX requests to Constants.ErrorUrl; see the "Handle and log an unhandled action exception" operation.

Behavioral notes

• Never sets filterContext.ExceptionHandled, so MVC's default error handling still runs afterwards.*
• Swallows any exception raised while logging so error handling can never itself fail.

Note: Statements marked with * were inferred from code structure, naming conventions, or contextual evidence where direct confirmation was not available in source artifacts. Statements marked with ** could not be confirmed; treat as unknown until verified.

Sources

• src/Web.Mvc/ActionFilters/HandleExceptionAttribute.cs