From 9482304311303fe96823d8bc1c585b70c4006915 Mon Sep 17 00:00:00 2001
From: JPTouron <jp.touron@gmail.com>
Date: Fri, 30 Jun 2017 09:45:00 -0300
Subject: [PATCH 1/2] - Overridden OnResultExecuted on BreadCrumbAttribute
 class to remove the crumb when the action result fails - Cleaned up code

---
 MvcBreadCrumbs.v12.suo                       | Bin 137216 -> 137216 bytes
 MvcBreadCrumbs/BreadCrumb.cs                 |  30 +--
 MvcBreadCrumbs/BreadCrumbAttribute.cs        | 109 +++++----
 MvcBreadCrumbs/HttpSessionProvider.cs        |  50 ++--
 MvcBreadCrumbs/IProvideBreadCrumbsSession.cs |  16 +-
 MvcBreadCrumbs/ResourceHelper.cs             |  72 +++---
 MvcBreadCrumbs/State.cs                      | 241 ++++++++++---------
 MvcBreadCrumbs/StateManager.cs               |  72 +++---
 8 files changed, 303 insertions(+), 287 deletions(-)

diff --git a/MvcBreadCrumbs.v12.suo b/MvcBreadCrumbs.v12.suo
index d460200c5f0b35b9396cebc60e607e106e9fbea0..1b0ee686dbd5e5603a2ce4ee9a6d227c3beb3219 100644
GIT binary patch
delta 7006
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B*n$86

delta 1004
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diff --git a/MvcBreadCrumbs/BreadCrumb.cs b/MvcBreadCrumbs/BreadCrumb.cs
index b71aa32..e2f710f 100644
--- a/MvcBreadCrumbs/BreadCrumb.cs
+++ b/MvcBreadCrumbs/BreadCrumb.cs
@@ -1,6 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
+using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Web.Mvc;
@@ -22,6 +20,7 @@ private static IProvideBreadCrumbsSession SessionProvider
                 return new HttpSessionProvider();
             }
         }
+
         public static void Add(string url, string label)
         {
             // get a key for the Url.
@@ -67,7 +66,7 @@ public static string GetPreviousUrl()
             var updatedList = new List<StateEntry>(previousPage);
             updatedList.Reverse();
 
-            if(updatedList.Count>1)
+            if (updatedList.Count > 1)
                 return updatedList.Skip(1).First().Url;
 
             return null;
@@ -97,7 +96,7 @@ public static RedirectResult RedirectToPreviousUrl()
                 if (string.IsNullOrEmpty(updatedList.Skip(1).First().Url))
                     return new RedirectResult(updatedList.Skip(1).First().Url);
             }
-                
+
             return null;
         }
 
@@ -112,7 +111,6 @@ public static IEnumerable<RedirectResult> GetOrderedRedirections()
 
         public static string Display(string cssClassOverride = "breadcrumb")
         {
-            
             var state = StateManager.GetState(SessionProvider.SessionId);
 
             if (state.Crumbs != null && !state.Crumbs.Any())
@@ -135,19 +133,23 @@ public static string Display(string cssClassOverride = "breadcrumb")
             });
             sb.Append("</ol>");
             return sb.ToString();
-
         }
-        public static string DisplayRaw()
-        {
 
+        public static string DisplayRaw(string crumbConcatenator = ">")
+        {
             var state = StateManager.GetState(SessionProvider.SessionId);
 
             if (state.Crumbs != null && !state.Crumbs.Any())
                 return "<!-- BreadCrumbs stack is empty -->";
 
-            return string.Join(" > ",
-                state.Crumbs.Select(x => "<a href=\"" + x.Url + "\">" + x.Label + "</a>").ToArray());
-
+            return string.Join("  " + crumbConcatenator + " ",
+                state.Crumbs.Select(x =>
+                {
+                    if (IsCurrentPage(x.Key))
+                        return x.Label;
+                    else
+                        return "<a href=\"" + x.Url + "\">" + x.Label + "</a>";
+                }).ToArray());
         }
 
         private static bool IsCurrentPage(int compareKey)
@@ -158,7 +160,5 @@ private static bool IsCurrentPage(int compareKey)
                 .GetHashCode();
             return key == compareKey;
         }
-
     }
-
-}
+}
\ No newline at end of file
diff --git a/MvcBreadCrumbs/BreadCrumbAttribute.cs b/MvcBreadCrumbs/BreadCrumbAttribute.cs
index a8e2ed6..c8ded1d 100644
--- a/MvcBreadCrumbs/BreadCrumbAttribute.cs
+++ b/MvcBreadCrumbs/BreadCrumbAttribute.cs
@@ -1,52 +1,59 @@
-using System;
-using System.Web.Mvc;
-
-namespace MvcBreadCrumbs
-{
-   
-    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class, AllowMultiple = false)]
-    public class BreadCrumbAttribute : ActionFilterAttribute
-    {
-
-        public bool Clear { get; set; }
-
-        public string Label { get; set; }
-
-        public Type ResourceType { get; set; }
-
-        private static IProvideBreadCrumbsSession _SessionProvider { get; set; }
-
-        private static IProvideBreadCrumbsSession SessionProvider
-        {
-            get
-            {
-                if (_SessionProvider != null)
-                {
-                    return _SessionProvider;
-                }
-                return new HttpSessionProvider();
-            }
-        }
-
-        public override void OnActionExecuting(ActionExecutingContext filterContext)
-        {
-
-            if (filterContext.IsChildAction)
-                return;
-
-            if (filterContext.HttpContext.Request.HttpMethod != "GET")
-                return;
-
-            if (Clear)
-            {
-                StateManager.RemoveState(SessionProvider.SessionId);
-            }
-
-            var state = StateManager.GetState(SessionProvider.SessionId);
-            state.Push(filterContext, Label, ResourceType);
-
-        }
-
-    }
-    
+using System;
+using System.Web.Mvc;
+
+namespace MvcBreadCrumbs
+{
+    [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class, AllowMultiple = false)]
+    public class BreadCrumbAttribute : ActionFilterAttribute
+    {
+        public bool Clear { get; set; }
+
+        public string Label { get; set; }
+
+        public Type ResourceType { get; set; }
+
+        private static IProvideBreadCrumbsSession _SessionProvider { get; set; }
+
+        private static IProvideBreadCrumbsSession SessionProvider
+        {
+            get
+            {
+                if (_SessionProvider != null)
+                {
+                    return _SessionProvider;
+                }
+                return new HttpSessionProvider();
+            }
+        }
+
+        public override void OnResultExecuted(ResultExecutedContext filterContext)
+        {
+            if (filterContext.Exception != null)
+            {
+                //if we have an exception on the result (for ANY reason), let's make sure that we don't
+                //track this failing page on the breadcrumb
+                var state = StateManager.GetState(SessionProvider.SessionId);
+                state.OnErrorRemoveCrumb(filterContext);
+            }
+
+            base.OnResultExecuted(filterContext);
+        }
+
+        public override void OnActionExecuting(ActionExecutingContext filterContext)
+        {
+            if (filterContext.IsChildAction)
+                return;
+
+            if (filterContext.HttpContext.Request.HttpMethod != "GET")
+                return;
+
+            if (Clear)
+            {
+                StateManager.RemoveState(SessionProvider.SessionId);
+            }
+
+            var state = StateManager.GetState(SessionProvider.SessionId);
+            state.Push(filterContext, Label, ResourceType);
+        }
+    }
 }
\ No newline at end of file
diff --git a/MvcBreadCrumbs/HttpSessionProvider.cs b/MvcBreadCrumbs/HttpSessionProvider.cs
index 8681df9..fb5d4b5 100644
--- a/MvcBreadCrumbs/HttpSessionProvider.cs
+++ b/MvcBreadCrumbs/HttpSessionProvider.cs
@@ -1,27 +1,23 @@
-using System;
-using System.Collections.Generic;       
-using System.Linq;
-using System.Text;
-using System.Web;
-
-namespace MvcBreadCrumbs
-{
-    public class HttpSessionProvider : IProvideBreadCrumbsSession
-    {
-        public string SessionId
-        {
-            get
-            {
-                var id = HttpContext.Current.Session.SessionID;
-                var sessionKey = string.Format("{0}-SessionId.MvcBreadCrumbs", id);
-
-                // Apparently you need to actually ad something to session in order to
-                // stabilize the SessionID between requests, who knew.  Just adding SessionID,
-                // as a dummy.
-                // Modified Session key to minimize the possibility of hitting existant key
-                HttpContext.Current.Session[sessionKey] = id;
-                return id;
-            }
-        }
-    }
-}
+using System.Web;
+
+namespace MvcBreadCrumbs
+{
+    public class HttpSessionProvider : IProvideBreadCrumbsSession
+    {
+        public string SessionId
+        {
+            get
+            {
+                var id = HttpContext.Current.Session.SessionID;
+                var sessionKey = string.Format("{0}-SessionId.MvcBreadCrumbs", id);
+
+                // Apparently you need to actually ad something to session in order to
+                // stabilize the SessionID between requests, who knew.  Just adding SessionID,
+                // as a dummy.
+                // Modified Session key to minimize the possibility of hitting existant key
+                HttpContext.Current.Session[sessionKey] = id;
+                return id;
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/MvcBreadCrumbs/IProvideBreadCrumbsSession.cs b/MvcBreadCrumbs/IProvideBreadCrumbsSession.cs
index bee1717..1b243ca 100644
--- a/MvcBreadCrumbs/IProvideBreadCrumbsSession.cs
+++ b/MvcBreadCrumbs/IProvideBreadCrumbsSession.cs
@@ -1,9 +1,7 @@
-using System;
-
-namespace MvcBreadCrumbs
-{
-    public interface IProvideBreadCrumbsSession
-    {
-        string SessionId { get; }
-    }
-}
+namespace MvcBreadCrumbs
+{
+    public interface IProvideBreadCrumbsSession
+    {
+        string SessionId { get; }
+    }
+}
\ No newline at end of file
diff --git a/MvcBreadCrumbs/ResourceHelper.cs b/MvcBreadCrumbs/ResourceHelper.cs
index 182e149..a5f1d51 100644
--- a/MvcBreadCrumbs/ResourceHelper.cs
+++ b/MvcBreadCrumbs/ResourceHelper.cs
@@ -1,37 +1,37 @@
-using System;
-using System.Reflection;
-
-namespace MvcBreadCrumbs
-{
-    /// <summary>
-    /// Helper class for retrieving the tranlation values
-    /// </summary>
-    public class ResourceHelper
-    {
-        /// <summary>
-        /// Gets the resource lookup.
-        /// </summary>
-        /// <param name="resourceType">Type of the resource.</param>
-        /// <param name="resourceName">Name of the resource.</param>
-        /// <returns></returns>
-        public static string GetResourceLookup(Type resourceType, string resourceName)
-        {
-            if ((resourceType != null) && (resourceName != null))
-            {
-                var property = resourceType.GetProperty(resourceName, BindingFlags.Public | BindingFlags.Static);
-                if (property == null)
-                {
-                    return resourceName;
-                }
-                if (property.PropertyType != typeof(string))
-                {
-                    return resourceName;
-                }
-
-                return (string)property.GetValue(null, null);
-            }
-
-            return resourceName ?? string.Empty;
-        }
-    }
+using System;
+using System.Reflection;
+
+namespace MvcBreadCrumbs
+{
+    /// <summary>
+    /// Helper class for retrieving the tranlation values
+    /// </summary>
+    public class ResourceHelper
+    {
+        /// <summary>
+        /// Gets the resource lookup.
+        /// </summary>
+        /// <param name="resourceType">Type of the resource.</param>
+        /// <param name="resourceName">Name of the resource.</param>
+        /// <returns></returns>
+        public static string GetResourceLookup(Type resourceType, string resourceName)
+        {
+            if ((resourceType != null) && (resourceName != null))
+            {
+                var property = resourceType.GetProperty(resourceName, BindingFlags.Public | BindingFlags.Static);
+                if (property == null)
+                {
+                    return resourceName;
+                }
+                if (property.PropertyType != typeof(string))
+                {
+                    return resourceName;
+                }
+
+                return (string)property.GetValue(null, null);
+            }
+
+            return resourceName ?? string.Empty;
+        }
+    }
 }
\ No newline at end of file
diff --git a/MvcBreadCrumbs/State.cs b/MvcBreadCrumbs/State.cs
index 091cff3..e5ce4f8 100644
--- a/MvcBreadCrumbs/State.cs
+++ b/MvcBreadCrumbs/State.cs
@@ -1,113 +1,130 @@
-using System;
-using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Reflection;
-using System.Web.Mvc;
-
-namespace MvcBreadCrumbs
-{
-    public class State
-    {
-        public string SessionCookie { get; set; }
-        public List<StateEntry> Crumbs { get; set; }
-        public StateEntry Current { get; set; }
-
-        public void Push(ActionExecutingContext context, string label, Type resourceType )
-        {
-            var key =
-                context.HttpContext.Request.Url.LocalPath
-                .ToLower()
-                .GetHashCode();
-
-            if (Crumbs.Any(x => x.Key == key))
-            {
-                var newCrumbs = new List<StateEntry>();
-                var remove = false;
-                // We've seen this route before, maybe user clicked on a breadcrumb
-                foreach (var crumb in Crumbs)
-                {
-                    if (crumb.Key == key)
-                    {
-                        remove = true;
-                    }
-                    if (!remove)
-                    {
-                        newCrumbs.Add(crumb);
-                    }
-                }
-                Crumbs = newCrumbs;
-            }
-
-            Current = new StateEntry().WithKey(key)
-                .SetContext(context)
-                .WithUrl(context.HttpContext.Request.Url.ToString())
-                .WithLabel(ResourceHelper.GetResourceLookup(resourceType, label));
-                
-            Crumbs.Add(Current);
-        }
-        
-        public State(string cookie)
-        {
-            SessionCookie = cookie;
-            Crumbs = new List<StateEntry>();
-        }
-    }
-
-    public class StateEntry
-    {
-        public ActionExecutingContext Context { get; private set; }
-        public string Label { get; set; }
-        public int Key { get; set; }
-        public string Url { get; set; }
-
-        public StateEntry WithKey(int key)
-        {
-            Key = key;
-            return this;
-        }
-
-        public StateEntry WithUrl(string url)
-        {
-            Url = url;
-            return this;
-        }
-
-        public StateEntry WithLabel(string label)
-        {
-            Label = label ?? Label;
-            return this;
-        }
-
-
-        public StateEntry SetContext(ActionExecutingContext context)
-        {
-            Context = context;
-            var type = Context.Controller.GetType();
-            var actionName = (string)Context.RouteData.Values["Action"];
-            var labelQuery =
-                from m in type.FindMembers(MemberTypes.Method, BindingFlags.Public | BindingFlags.Instance, (memberInfo, _) => memberInfo.Name == actionName, null)
-                let atts = m.GetCustomAttributes(typeof(DisplayAttribute), false)
-                where atts.Length > 0
-                select ((DisplayAttribute)atts[0]).GetName();
-            Label = labelQuery.FirstOrDefault() ?? (string)context.RouteData.Values["Action"];
-            return this;
-        }
-
-        public string Controller 
-        { 
-            get
-            {
-                return (string) Context.RouteData.Values["controller"];
-            } 
-        }
-
-        public string Action
-        {
-            get
-            {
-                return (string)Context.RouteData.Values["action"];
-            }
-        }
-    }
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Reflection;
+using System.Web.Mvc;
+
+namespace MvcBreadCrumbs
+{
+    public class State
+    {
+        public string SessionCookie { get; set; }
+        public List<StateEntry> Crumbs { get; set; }
+        public StateEntry Current { get; set; }
+
+        public void Push(ActionExecutingContext context, string label, Type resourceType)
+        {
+            var key =
+                context.HttpContext.Request.Url.LocalPath
+                .ToLower()
+                .GetHashCode();
+
+            if (Crumbs.Any(x => x.Key == key))
+            {
+                var newCrumbs = new List<StateEntry>();
+                var remove = false;
+                // We've seen this route before, maybe user clicked on a breadcrumb
+                foreach (var crumb in Crumbs)
+                {
+                    if (crumb.Key == key)
+                    {
+                        remove = true;
+                    }
+                    if (!remove)
+                    {
+                        newCrumbs.Add(crumb);
+                    }
+                }
+                Crumbs = newCrumbs;
+            }
+
+            Current = new StateEntry().WithKey(key)
+                .SetContext(context)
+                .WithUrl(context.HttpContext.Request.Url.ToString())
+                .WithLabel(ResourceHelper.GetResourceLookup(resourceType, label));
+
+            Crumbs.Add(Current);
+        }
+
+        /// <summary>
+        /// provides a way to remove a crumb from the crumbs list
+        /// </summary>
+        /// <param name="context"></param>
+        public void OnErrorRemoveCrumb(ResultExecutedContext context)
+        {
+            var key =
+                context.HttpContext.Request.Url.LocalPath
+                .ToLower()
+                .GetHashCode();
+
+            if (Crumbs.Any(x => x.Key == key))
+            {
+                var crumb = Crumbs.Single(x => x.Key == key);
+                Crumbs.Remove(crumb);
+            }
+        }
+
+        public State(string cookie)
+        {
+            SessionCookie = cookie;
+            Crumbs = new List<StateEntry>();
+        }
+    }
+
+    public class StateEntry
+    {
+        public ActionExecutingContext Context { get; private set; }
+        public string Label { get; set; }
+        public int Key { get; set; }
+        public string Url { get; set; }
+
+        public StateEntry WithKey(int key)
+        {
+            Key = key;
+            return this;
+        }
+
+        public StateEntry WithUrl(string url)
+        {
+            Url = url;
+            return this;
+        }
+
+        public StateEntry WithLabel(string label)
+        {
+            Label = label ?? Label;
+            return this;
+        }
+
+        public StateEntry SetContext(ActionExecutingContext context)
+        {
+            Context = context;
+            var type = Context.Controller.GetType();
+            var actionName = (string)Context.RouteData.Values["Action"];
+            var labelQuery =
+                from m in type.FindMembers(MemberTypes.Method, BindingFlags.Public | BindingFlags.Instance, (memberInfo, _) => memberInfo.Name == actionName, null)
+                let atts = m.GetCustomAttributes(typeof(DisplayAttribute), false)
+                where atts.Length > 0
+                select ((DisplayAttribute)atts[0]).GetName();
+            Label = labelQuery.FirstOrDefault() ?? (string)context.RouteData.Values["Action"];
+            return this;
+        }
+
+        public string Controller
+        {
+            get
+            {
+                return (string)Context.RouteData.Values["controller"];
+            }
+        }
+
+        public string Action
+        {
+            get
+            {
+                return (string)Context.RouteData.Values["action"];
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/MvcBreadCrumbs/StateManager.cs b/MvcBreadCrumbs/StateManager.cs
index 09bd79f..828a541 100644
--- a/MvcBreadCrumbs/StateManager.cs
+++ b/MvcBreadCrumbs/StateManager.cs
@@ -1,38 +1,36 @@
-using System.Collections.Generic;
-using System.Linq;
-
-namespace MvcBreadCrumbs
-{
-    public class StateManager
-    {
-        public static readonly List<State> States = new List<State>();
-
-        public static State GetState(string id)
-        {
-            if (States.FirstOrDefault(x => x.SessionCookie == id) == null)
-            {
-                StateManager.CreateState(id);
-            }
-            return States.First(x => x.SessionCookie == id);
-        }
-
-        public static State CreateState(string cookie)
-        {
-            var newstate = new State(cookie);
-            States.Add(newstate);
-
-            return newstate;
-
-        }
-
-        public static void RemoveState(string id)
-        {
-            var state = GetState(id);
-            if (state != null)
-            {
-                States.Remove(state);
-            }
-        }
-
-    }
+using System.Collections.Generic;
+using System.Linq;
+
+namespace MvcBreadCrumbs
+{
+    public class StateManager
+    {
+        public static readonly List<State> States = new List<State>();
+
+        public static State GetState(string id)
+        {
+            if (States.FirstOrDefault(x => x.SessionCookie == id) == null)
+            {
+                StateManager.CreateState(id);
+            }
+            return States.First(x => x.SessionCookie == id);
+        }
+
+        public static State CreateState(string cookie)
+        {
+            var newstate = new State(cookie);
+            States.Add(newstate);
+
+            return newstate;
+        }
+
+        public static void RemoveState(string id)
+        {
+            var state = GetState(id);
+            if (state != null)
+            {
+                States.Remove(state);
+            }
+        }
+    }
 }
\ No newline at end of file

From c3e71e453d5806c3561e66dcb101a33afea63aaf Mon Sep 17 00:00:00 2001
From: JP <jp.touron@gmail.com>
Date: Thu, 11 Jan 2018 09:18:15 -0300
Subject: [PATCH 2/2] re-implemented changes and resolved all conflicts on PR:
 Fixed issue with considering breadcrumbs on failing pages
 https://github.com/thelarz/MvcBreadCrumbs/pull/28

---
 .vs/MvcBreadCrumbs/v14/.suo           | Bin 104448 -> 107008 bytes
 MvcBreadCrumbs/BreadCrumb.cs          |  34 +++++++++++++++++---------
 MvcBreadCrumbs/BreadCrumbAttribute.cs |  12 +++++++++
 MvcBreadCrumbs/State.cs               |  27 +++++++++++++++++---
 4 files changed, 59 insertions(+), 14 deletions(-)

diff --git a/.vs/MvcBreadCrumbs/v14/.suo b/.vs/MvcBreadCrumbs/v14/.suo
index 7b5b2da2bf1741f8022a67ab133d0e32699479c9..0e614f4561271e831550fed893e336dae9931332 100644
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diff --git a/MvcBreadCrumbs/BreadCrumb.cs b/MvcBreadCrumbs/BreadCrumb.cs
index 173a89e..5dd678c 100644
--- a/MvcBreadCrumbs/BreadCrumb.cs
+++ b/MvcBreadCrumbs/BreadCrumb.cs
@@ -39,6 +39,15 @@ internal static IHierarchyProvider HierarchyProvider
 
 		public static void Add(string url, string label)
 		{
+            // get a key for the Url.
+            var key =
+               url
+               .ToLower()
+               .GetHashCode();
+
+            var current = new StateEntry().WithKey(key)
+             .WithUrl(url)
+             .WithLabel(label);
 			var state = StateManager.GetState(SessionProvider.SessionId);
 			state.Push(url, label);
 		}
@@ -145,21 +154,24 @@ public static string Display(string cssClassOverride = "breadcrumb")
 			return sb.ToString();
 
 		}
-		public static string DisplayRaw()
-		{
-
-			var state = StateManager.GetState(SessionProvider.SessionId);
+        public static string DisplayRaw(string crumbConcatenator = ">")
+        {
+            var state = StateManager.GetState(SessionProvider.SessionId);
 
-			if (state.Crumbs != null && !state.Crumbs.Any())
-				return "<!-- BreadCrumbs stack is empty -->";
+            if (state.Crumbs != null && !state.Crumbs.Any())
+                return "<!-- BreadCrumbs stack is empty -->";
 
 			// don't allow blank labels to propagate outside
 			state.Crumbs.ToList().ForEach(x => { x.Label = string.IsNullOrWhiteSpace(x.Label) ? x.Action : x.Label; });
-
-			return string.Join(" > ",
-				state.Crumbs.Select(x => "<a href=\"" + x.Url + "\">" + x.Label + "</a>").ToArray());
-
-		}
+            return string.Join("  " + crumbConcatenator + " ",
+                state.Crumbs.Select(x =>
+                {
+                    if (IsCurrentPage(x.Key))
+                        return x.Label;
+                    else
+                        return "<a href=\"" + x.Url + "\">" + x.Label + "</a>";
+                }).ToArray());
+        }
 
 		private static bool IsCurrentPage(int compareKey)
 		{
diff --git a/MvcBreadCrumbs/BreadCrumbAttribute.cs b/MvcBreadCrumbs/BreadCrumbAttribute.cs
index 8060350..04f2d81 100644
--- a/MvcBreadCrumbs/BreadCrumbAttribute.cs
+++ b/MvcBreadCrumbs/BreadCrumbAttribute.cs
@@ -35,6 +35,18 @@ private static IProvideBreadCrumbsSession SessionProvider
 			}
 		}
 
+        public override void OnResultExecuted(ResultExecutedContext filterContext)
+        {
+            if (filterContext.Exception != null)
+            {
+                //if we have an exception on the result (for ANY reason), let's make sure that we don't
+                //track this failing page on the breadcrumb
+                var state = StateManager.GetState(SessionProvider.SessionId);
+                state.OnErrorRemoveCrumb(filterContext);
+            }
+
+            base.OnResultExecuted(filterContext);
+        }
 		public override void OnActionExecuting(ActionExecutingContext filterContext)
 		{
 
diff --git a/MvcBreadCrumbs/State.cs b/MvcBreadCrumbs/State.cs
index e664dcf..94fe5b4 100644
--- a/MvcBreadCrumbs/State.cs
+++ b/MvcBreadCrumbs/State.cs
@@ -68,9 +68,30 @@ private void Add(string url, string label, Type resourceType = null, ActionExecu
 				.WithLevel(levels)
 				.WithLabel(ResourceHelper.GetResourceLookup(resourceType, label));
 
-			Crumbs.Add(Current);
-		}
-	}
+            Crumbs.Add(Current);
+        }
+
+
+        /// <summary>
+        /// provides a way to remove a crumb from the crumbs list
+        /// </summary>
+        /// <param name="context"></param>
+        public void OnErrorRemoveCrumb(ResultExecutedContext context)
+        {
+            var key =
+                context.HttpContext.Request.Url.LocalPath
+                .ToLower()
+                .GetHashCode();
+
+            if (Crumbs.Any(x => x.Key == key))
+            {
+                var crumb = Crumbs.Single(x => x.Key == key);
+                Crumbs.Remove(crumb);
+            }
+        }
+
+     
+    }
 
 	public class StateEntry
 	{