Index: Src/GoogleApis/Apis/Requests/Parameters/ParameterUtils.cs
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+/*
+Copyright 2013 Google Inc
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Linq;
+using System.Reflection;
+
+using Google.Apis.Util;
+
+namespace Google.Apis.Requests.Parameters
+{
+    /// <summary>
+    /// Utility class for iterating on <seealso cref="RequestParameterAttribute"/> properties in a request object.
+    /// </summary>
+    public static class ParameterUtils
+    {
+        /// <summary>
+        /// Creates a <seealso cref="System.Net.Http.FormUrlEncodedContent"/> with all the specified parameters in 
+        /// input request. It uses reflection to iterate over all properties with
+        /// <seealso cref="Google.Apis.Util.RequestParameterAttribute"/> attribute.
+        /// </summary>
+        /// <param name="request">
+        /// A request object which contains properties with 
+        /// <seealso cref="Google.Apis.Util.RequestParameterAttribute"/> attribute. Those properties will be serialized
+        /// to the returned <seealso cref="System.Net.Http.FormUrlEncodedContent"/>.
+        /// </param>
+        /// <returns>
+        /// A <seealso cref="System.Net.Http.FormUrlEncodedContent"/> which contains the all the given object required 
+        /// values
+        /// </returns>
+        public static FormUrlEncodedContent CreateFormUrlEncodedContent(object request)
+        {
+            IList<KeyValuePair<string, string>> list = new List<KeyValuePair<string, string>>();
+            IterateParameters(request, (type, name, value) =>
+                {
+                    list.Add(new KeyValuePair<string, string>(name, value.ToString()));
+                });
+            return new FormUrlEncodedContent(list);
+        }
+
+        /// <summary>
+        /// Creates a parameter dictionary by using reflection to iterate over all properties with
+        /// <seealso cref="Google.Apis.Util.RequestParameterAttribute"/> attribute.
+        /// </summary>
+        /// <param name="request">
+        /// A request object which contains properties with 
+        /// <seealso cref="Google.Apis.Util.RequestParameterAttribute"/> attribute. Those properties will be set
+        /// in the output dictionary
+        /// </param>
+        public static IDictionary<string, object> CreateParameterDictionary(object request)
+        {
+            var dict = new Dictionary<string, object>();
+            IterateParameters(request, (type, name, value) =>
+                {
+                    dict.Add(name, value);
+                });
+            return dict;
+        }
+
+        /// <summary>
+        /// Sets query parameters in the given builder with all all properties with the
+        /// <seealso cref="Google.Apis.Util.RequestParameterAttribute"/> attribute.
+        /// </summary>
+        /// <param name="builder">The request builder</param>
+        /// <param name="request">
+        /// A request object which contains properties with 
+        /// <seealso cref="Google.Apis.Util.RequestParameterAttribute"/> attribute. Those properties will be set in the 
+        /// given request builder object
+        /// </param>
+        public static void InitParameters(RequestBuilder builder, object request)
+        {
+            IterateParameters(request, (type, name, value) =>
+                {
+                    builder.AddParameter(type, name, value.ToString());
+                });
+        }
+
+        /// <summary>
+        /// Iterates over all <seealso cref="RequestParameterAttribute"/> properties in the request object and invokes
+        /// the specified action for each of them.
+        /// </summary>
+        /// <param name="request">A request object</param>
+        /// <param name="action">An action to invoke which gets the parameter type, name and its value</param>
+        private static void IterateParameters(object request, Action<RequestParameterType, string, object> action)
+        {
+            // Use reflection to build the parameter dictionary.
+            foreach (PropertyInfo property in request.GetType().GetProperties(BindingFlags.Instance |
+                BindingFlags.Public))
+            {
+                // Retrieve the RequestParameterAttribute.
+                RequestParameterAttribute attribute =
+                    property.GetCustomAttributes(typeof(RequestParameterAttribute), false).FirstOrDefault() as
+                    RequestParameterAttribute;
+                if (attribute == null)
+                {
+                    continue;
+                }
+
+                // Get the name of this parameter from the attribute, if it doesn't exist take a lower-case variant of 
+                // property name.
+                string name = attribute.Name ?? property.Name.ToLower();
+
+                var propertyType = property.PropertyType;
+                var value = property.GetValue(request, null);
+
+                // Call action with the type name and value.
+                if (propertyType.IsValueType || value != null)
+                {
+                    action(attribute.Type, name, value);
+                }
+            }
+        }
+    }
+}