Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/ModelBinding/ElementalValueProvider.cs

@@ -0,0 +1,40 @@
+namespace System.Web.ModelBinding {
+    using System;
+    using System.Globalization;
+
+    // Represents a value provider that contains a single value.
+    internal sealed class ElementalValueProvider : IValueProvider {
+
+        public ElementalValueProvider(string name, object rawValue, CultureInfo culture) {
+            Name = name;
+            RawValue = rawValue;
+            Culture = culture;
+        }
+
+        public CultureInfo Culture {
+            get;
+            private set;
+        }
+
+        public string Name {
+            get;
+            private set;
+        }
+
+        public object RawValue {
+            get;
+            private set;
+        }
+
+        public bool ContainsPrefix(string prefix) {
+            return PrefixContainer.IsPrefixMatch(Name, prefix);
+        }
+
+        public ValueProviderResult GetValue(string key) {
+            return (String.Equals(key, Name, StringComparison.OrdinalIgnoreCase))
+                ? new ValueProviderResult(RawValue, Convert.ToString(RawValue, Culture), Culture)
+                : null;
+        }
+
+    }
+}