Support for ExpandoObject (or at least, "dynamic" and dictionary-like) to be...

Support for ExpandoObject (or at least, "dynamic" and dictionary-like) to be treated directly as a parameter

Dapper/SqlMapper.cs

@@ -986,6 +986,16 @@ private static CacheInfo GetCacheInfo(Identity identity)
                     {
                         info.ParamReader = (cmd, obj) => { (obj as IDynamicParameters).AddParameters(cmd,identity); };
                     }
+#if !CSHARP30
+                    else if (typeof(IEnumerable<KeyValuePair<string, object>>).IsAssignableFrom(identity.parametersType) && typeof(System.Dynamic.IDynamicMetaObjectProvider).IsAssignableFrom(identity.parametersType))
+                    {
+                        info.ParamReader = (cmd, obj) =>
+                        {
+                            IDynamicParameters mapped = new DynamicParameters(obj);
+                            mapped.AddParameters(cmd, identity);
+                        };
+                    }
+#endif
                     else
                     {
                         info.ParamReader = CreateParamInfoGenerator(identity);

Tests/Tests.cs

@@ -9,6 +9,7 @@
 using System.Data;
 using System.Collections;
 using System.Reflection;
+using System.Dynamic;
 #if POSTGRESQL
 using Npgsql;
 #endif
@@ -788,6 +789,14 @@ public void TestSupportForDynamicParameters()
 
             p.Get<int>("age").IsEqualTo(11);
         }
+        public void TestSupportForExpandoObjectParameters()
+        {
+            dynamic p = new ExpandoObject();
+            p.name = "bob";
+            object parameters = p;
+            string result = connection.Query<string>("select @name", parameters).First();
+            result.IsEqualTo("bob");
+        }
 
         public void TestProcSupport()
         {