Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web.DynamicData/DynamicData/ModelProviders/DataModelProvider.cs

@@ -0,0 +1,24 @@
+using System.Collections.ObjectModel;
+
+namespace System.Web.DynamicData.ModelProviders {
+    /// <summary>
+    /// Base data model provider class 
+    /// Each provider type (e.g. Linq To Sql, Entity Framework, 3rd party) extends this class.
+    /// </summary>
+    public abstract class DataModelProvider {
+        /// <summary>
+        ///  The list of tables exposed by this data model
+        /// </summary>
+        public abstract ReadOnlyCollection<TableProvider> Tables { get; }
+
+        /// <summary>
+        ///  The type of the data context
+        /// </summary>
+        public virtual Type ContextType { get; protected set; }
+
+        /// <summary>
+        /// Create an instance of the data context
+        /// </summary>
+        public abstract object CreateContext();
+    }
+}