Created EnumHelper class to wrap the Enum.TryParse method so an alter…

…nate implementation can be called in .NET 3.5, which doesn't support Enum.TryParse.

src/MvcSiteMapProvider/MvcSiteMapProvider/EnumHelper.cs

@@ -0,0 +1,31 @@
+using System;
+
+namespace MvcSiteMapProvider
+{
+    static class EnumHelper
+    {
+        public static bool TryParse<TEnum>(string value, bool ignoreCase, out TEnum result) where TEnum : struct
+        {
+#if NET35
+            try
+            {
+                result = (TEnum)Enum.Parse(typeof(TEnum), value, ignoreCase);
+                return true;
+            }
+            catch
+            {
+            }
+            result = default(TEnum);
+            return false;
+#else
+            return Enum.TryParse<TEnum>(value, ignoreCase, out result);
+#endif
+        }
+
+        public static bool TryParse<TEnum>(string value, out TEnum result) where TEnum : struct
+        {
+            return EnumHelper.TryParse<TEnum>(value, false, out result);
+        }
+    }
+}
+

src/MvcSiteMapProvider/MvcSiteMapProvider/MvcSiteMapProvider.csproj

@@ -164,6 +164,7 @@
     <Compile Include="DI\ConfigurationSettings.cs" />
     <Compile Include="DI\ControllerFactoryDecorator.cs" />
     <Compile Include="DI\DependencyResolverDecorator.cs" />
+    <Compile Include="EnumHelper.cs" />
     <Compile Include="ISiteMapNodeProvider.cs" />
     <Compile Include="ISiteMapSettings.cs" />
     <Compile Include="Reflection\AttributeAssemblyProvider.cs" />

src/MvcSiteMapProvider/MvcSiteMapProvider/SiteMap.cs

@@ -809,7 +809,7 @@ protected virtual void ThrowIfHttpMethodInvalid(ISiteMapNode node)
         {
             HttpVerbs verbs;
             if (String.IsNullOrEmpty(node.HttpMethod) || 
-                (!Enum.TryParse<HttpVerbs>(node.HttpMethod, true, out verbs) && 
+                (!EnumHelper.TryParse<HttpVerbs>(node.HttpMethod, true, out verbs) && 
                 !node.HttpMethod.Equals("*") && 
                 !node.HttpMethod.Equals("Request", StringComparison.InvariantCultureIgnoreCase)))
             {