1 files changed, 65 insertions, 0 deletions
diff --git a/src/System.Web.Mvc/DictionaryValueProvider`1.cs b/src/System.Web.Mvc/DictionaryValueProvider`1.cs
new file mode 100644
index 00000000..d1abfa94
--- /dev/null
+++ b/src/System.Web.Mvc/DictionaryValueProvider`1.cs
@@ -0,0 +1,65 @@
+using System.Collections.Generic;
+using System.Globalization;
+
+namespace System.Web.Mvc
+{
+    public class DictionaryValueProvider<TValue> : IValueProvider, IEnumerableValueProvider
+    {
+        private readonly HashSet<string> _prefixes = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        private readonly Dictionary<string, ValueProviderResult> _values = new Dictionary<string, ValueProviderResult>(StringComparer.OrdinalIgnoreCase);
+
+        public DictionaryValueProvider(IDictionary<string, TValue> dictionary, CultureInfo culture)
+        {
+            if (dictionary == null)
+            {
+                throw new ArgumentNullException("dictionary");
+            }
+
+            AddValues(dictionary, culture);
+        }
+
+        private void AddValues(IDictionary<string, TValue> dictionary, CultureInfo culture)
+        {
+            if (dictionary.Count > 0)
+            {
+                _prefixes.Add(String.Empty);
+            }
+
+            foreach (var entry in dictionary)
+            {
+                _prefixes.UnionWith(ValueProviderUtil.GetPrefixes(entry.Key));
+
+                object rawValue = entry.Value;
+                string attemptedValue = Convert.ToString(rawValue, culture);
+                _values[entry.Key] = new ValueProviderResult(rawValue, attemptedValue, culture);
+            }
+        }
+
+        public virtual bool ContainsPrefix(string prefix)
+        {
+            if (prefix == null)
+            {
+                throw new ArgumentNullException("prefix");
+            }
+
+            return _prefixes.Contains(prefix);
+        }
+
+        public virtual ValueProviderResult GetValue(string key)
+        {
+            if (key == null)
+            {
+                throw new ArgumentNullException("key");
+            }
+
+            ValueProviderResult valueProviderResult;
+            _values.TryGetValue(key, out valueProviderResult);
+            return valueProviderResult;
+        }
+
+        public virtual IDictionary<string, string> GetKeysFromPrefix(string prefix)
+        {
+            return ValueProviderUtil.GetKeysFromPrefix(_prefixes, prefix);
+        }
+    }
+}