addparameter was the wrong name, this sets up multiple

added test for TVP

Dapper/SqlMapper.cs

@@ -22,7 +22,7 @@ public static partial class SqlMapper
     {
         public interface IDynamicParameters
         {
-            void AddParameter(IDbCommand command);
+            void AddParameters(IDbCommand command);
         }
         static Link<Type, Action<IDbCommand, bool>> bindByNameCache;
         static Action<IDbCommand, bool> GetBindByName(Type commandType)
@@ -617,7 +617,7 @@ private static CacheInfo GetCacheInfo(Identity identity)
                 {
                     if (typeof(IDynamicParameters).IsAssignableFrom(identity.parametersType))
                     {
-                        info.ParamReader = (cmd, obj) => { (obj as IDynamicParameters).AddParameter(cmd); };
+                        info.ParamReader = (cmd, obj) => { (obj as IDynamicParameters).AddParameters(cmd); };
                     }
                     else
                     {
@@ -1379,7 +1379,7 @@ public DynamicParameters(object template)
         }
 
 
-        void SqlMapper.IDynamicParameters.AddParameter(IDbCommand command)
+        void SqlMapper.IDynamicParameters.AddParameters(IDbCommand command)
         {
             foreach (var param in parameters.Values)
             {

Tests/Tests.cs

@@ -707,6 +707,70 @@ public void TestDapperSetsPrivates()
         {
             connection.Query<PrivateDan>("select 'one' ShadowInDB").First().Shadow.IsEqualTo(1);
         }
+
+
+        class IntDynamicParam : Dapper.SqlMapper.IDynamicParameters
+        {
+            IEnumerable<int> numbers;
+            public IntDynamicParam(IEnumerable<int> numbers)
+            {
+                this.numbers = numbers;
+            }
+
+            public void AddParameters(IDbCommand command)
+            {
+                var sqlCommand = (SqlCommand)command;
+                sqlCommand.CommandType = CommandType.StoredProcedure;
+
+                List<Microsoft.SqlServer.Server.SqlDataRecord> number_list = new List<Microsoft.SqlServer.Server.SqlDataRecord>();
+
+                // Create an SqlMetaData object that describes our table type.
+                Microsoft.SqlServer.Server.SqlMetaData[] tvp_definition = { new Microsoft.SqlServer.Server.SqlMetaData("n", SqlDbType.Int) };
+
+                foreach (int n in numbers)
+                {
+                    // Create a new record, using the metadata array above.
+                    Microsoft.SqlServer.Server.SqlDataRecord rec = new Microsoft.SqlServer.Server.SqlDataRecord(tvp_definition);
+                    rec.SetInt32(0, n);    // Set the value.
+                    number_list.Add(rec);      // Add it to the list.
+                }
+
+                // Add the table parameter.
+                var p = sqlCommand.Parameters.Add("@ints", SqlDbType.Structured);
+                p.Direction = ParameterDirection.Input;
+                p.TypeName = "int_list_type";
+                p.Value = number_list;
+                
+            }
+        }
+
+        // SQL Server specific test to demonstrate TVP 
+        public void TestTVP()
+        {
+            try
+            {
+                connection.Execute("CREATE TYPE int_list_type AS TABLE (n int NOT NULL PRIMARY KEY)");
+                connection.Execute("CREATE PROC get_ints @ints int_list_type READONLY AS select * from @ints");
+
+                var nums = connection.Query<int>("get_ints", new IntDynamicParam(new int[] { 1, 2, 3 })).ToList();
+                nums[0].IsEqualTo(1);
+                nums[1].IsEqualTo(2);
+                nums[2].IsEqualTo(3);
+                nums.Count.IsEqualTo(3);
+
+            }
+            finally
+            {
+                try
+                {
+                    connection.Execute("DROP PROC get_ints");
+                }
+                finally
+                {
+                    connection.Execute("DROP TYPE int_list_type");
+                }
+            }
+        }
         
         /* TODO:
          *