/// <summary>
/// Called when an exception occurs.
/// </summary>
/// <param name="filterContext">The action-filter context.</param>
public override void OnException(ExceptionContext filterContext)
{
if (filterContext == null)
throw new ArgumentNullException(nameof(filterContext));
if (filterContext.IsChildAction)
return;
if (filterContext.ExceptionHandled || !filterContext.HttpContext.IsCustomErrorEnabled)
return;
var exception = filterContext.Exception;
if (!ExceptionType.IsInstanceOfType(exception))
return;
var args = new HandleErrorEventArgs(filterContext);
try
{
OnLogException(args);
}
finally
{
if (args.ReturnValue != null)
{
if (filterContext.Controller.TempData.ContainsKey(_returnValueKey))
filterContext.Controller.TempData[_returnValueKey] = args.ReturnValue;
else
filterContext.Controller.TempData.Add(_returnValueKey, args.ReturnValue);
}
var item = (string)filterContext.RouteData.Values["controller"];
var str = (string)filterContext.RouteData.Values["action"];
var handleErrorInfo = new HandleErrorInfo(filterContext.Exception, item, str);
if (filterContext.HttpContext.Request.IsAjaxRequest())
{
var message = filterContext.Exception is UnauthorizedHttpException
? filterContext.Exception.Message
: INTERNAL_SERVER_ERROR;
if (filterContext.Exception is UnauthorizedHttpException)
{
filterContext.Result = new JsonResult
{
JsonRequestBehavior = JsonRequestBehavior.AllowGet,
ContentType = "application/json",
ContentEncoding = Encoding.UTF8,
Data = new JsonData { Data = new { }, Errors = new { Server = new { errors = new[] { message } } } }
};
}
}
else
{
filterContext.Result = new ViewResult
{
ViewName = View,
MasterName = Master,
ViewData = new ViewDataDictionary<HandleErrorInfo>(handleErrorInfo),
TempData = filterContext.Controller.TempData
};
}
filterContext.ExceptionHandled = true;
filterContext.HttpContext.Response.Clear();
filterContext.HttpContext.Response.StatusCode = new HttpException(null, exception).GetHttpCode();
filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
}
}
private void OnLogException(HandleErrorEventArgs handleErrorEventArgs) => LogException?.Invoke(this, handleErrorEventArgs);
