/mcs/class/System.Web.Mvc2/System.Web.Mvc/HandleErrorAttribute.cs
C# | 119 lines | 84 code | 17 blank | 18 comment | 11 complexity | f1bc372679ec3b2009e3b13b69d11ad4 MD5 | raw file
- /* ****************************************************************************
- *
- * Copyright (c) Microsoft Corporation. All rights reserved.
- *
- * This software is subject to the Microsoft Public License (Ms-PL).
- * A copy of the license can be found in the license.htm file included
- * in this distribution.
- *
- * You must not remove this notice, or any other, from this software.
- *
- * ***************************************************************************/
-
- namespace System.Web.Mvc {
- using System;
- using System.Diagnostics.CodeAnalysis;
- using System.Globalization;
- using System.Web;
- using System.Web.Mvc.Resources;
-
- [SuppressMessage("Microsoft.Performance", "CA1813:AvoidUnsealedAttributes",
- Justification = "This attribute is AllowMultiple = true and users might want to override behavior.")]
- [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = true)]
- public class HandleErrorAttribute : FilterAttribute, IExceptionFilter {
-
- private const string _defaultView = "Error";
-
- private readonly object _typeId = new object();
-
- private Type _exceptionType = typeof(Exception);
- private string _master;
- private string _view;
-
- public Type ExceptionType {
- get {
- return _exceptionType;
- }
- set {
- if (value == null) {
- throw new ArgumentNullException("value");
- }
- if (!typeof(Exception).IsAssignableFrom(value)) {
- throw new ArgumentException(String.Format(CultureInfo.CurrentUICulture,
- MvcResources.ExceptionViewAttribute_NonExceptionType, value.FullName));
- }
-
- _exceptionType = value;
- }
- }
-
- public string Master {
- get {
- return _master ?? String.Empty;
- }
- set {
- _master = value;
- }
- }
-
- public override object TypeId {
- get {
- return _typeId;
- }
- }
-
- public string View {
- get {
- return (!String.IsNullOrEmpty(_view)) ? _view : _defaultView;
- }
- set {
- _view = value;
- }
- }
-
- public virtual void OnException(ExceptionContext filterContext) {
- if (filterContext == null) {
- throw new ArgumentNullException("filterContext");
- }
- if (filterContext.IsChildAction) {
- return;
- }
-
- // If custom errors are disabled, we need to let the normal ASP.NET exception handler
- // execute so that the user can see useful debugging information.
- if (filterContext.ExceptionHandled || !filterContext.HttpContext.IsCustomErrorEnabled) {
- return;
- }
-
- Exception exception = filterContext.Exception;
-
- // If this is not an HTTP 500 (for example, if somebody throws an HTTP 404 from an action method),
- // ignore it.
- if (new HttpException(null, exception).GetHttpCode() != 500) {
- return;
- }
-
- if (!ExceptionType.IsInstanceOfType(exception)) {
- return;
- }
-
- string controllerName = (string)filterContext.RouteData.Values["controller"];
- string actionName = (string)filterContext.RouteData.Values["action"];
- HandleErrorInfo model = new HandleErrorInfo(filterContext.Exception, controllerName, actionName);
- filterContext.Result = new ViewResult {
- ViewName = View,
- MasterName = Master,
- ViewData = new ViewDataDictionary<HandleErrorInfo>(model),
- TempData = filterContext.Controller.TempData
- };
- filterContext.ExceptionHandled = true;
- filterContext.HttpContext.Response.Clear();
- filterContext.HttpContext.Response.StatusCode = 500;
-
- // Certain versions of IIS will sometimes use their own error page when
- // they detect a server error. Setting this property indicates that we
- // want it to try to render ASP.NET MVC's error page instead.
- filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
- }
- }
- }