Massive.DynamicModel.CreateInsertCommand C# (CSharp) Method

        public virtual DbCommand CreateInsertCommand(dynamic expando)
        {
            DbCommand result = null;
            var settings = (IDictionary<string, object>)expando;
            var sbKeys = new StringBuilder();
            var sbVals = new StringBuilder();
            var stub = "INSERT INTO {0} ({1}) \r\n VALUES ({2})";
            result = CreateCommand(stub, null);
            int counter = 0;
            foreach (var item in settings) {
                sbKeys.AppendFormat("{0},", item.Key);
                sbVals.AppendFormat("@{0},", counter.ToString());
                result.AddParam(item.Value);
                counter++;
            }
            if (counter > 0) {
                var keys = sbKeys.ToString().Substring(0, sbKeys.Length - 1);
                var vals = sbVals.ToString().Substring(0, sbVals.Length - 1);
                var sql = string.Format(stub, TableName, keys, vals);
                result.CommandText = sql;
            }
            else throw new InvalidOperationException("Can't parse this object to the database - there are no properties set");
            return result;
        }