Generics collection serializer

Here is small utility class to serialize/deserialize generics collection... My usage of it is passing of multiple parameters to a web service at once. using System.Collections.Generic; using System.Collections; using System.IO; using System.Xml.Serialization; public class CollectionSerializer<TKey, TValue> { public static void Serialize(TextWriter writer, IDictionary<TKey, TValue> dictionary) { List<ListEntry<TKey, TValue>> entries = new List<ListEntry<TKey, TValue>>(dictionary.Count); foreach (TKey key in dictionary.Keys) { entries.Add(new ListEntry<TKey, TValue>(key, dictionary[key])); } XmlSerializer serializer = new XmlSerializer(typeof(List<ListEntry<TKey, TValue>>)); serializer.Serialize(writer, entries); } public static void Deserialize(TextReader reader, IDictionary dictionary) { dictionary.Clear(); XmlSerializer serializer = new XmlSerializer(typeof(List<ListEntry<TKey, TValue>>)); List<ListEntry<TKey, TValue>> list = (List<ListEntry<TKey, TValue>>)serializer.Deserialize(reader); foreach( ListEntry<TKey, TValue> entry in list ) { dictionary[entry.Key] = entry.Value; } } public class ListEntry<TKeyEntry, TValueEntry> { public ListEntry() {} public ListEntry(TKeyEntry key, TValueEntry value) { Key = key; Value = value; } public TKeyEntry Key; public TValueEntry Value; } } Please note that standard Tuple type can't be used instead of custom ListEntry as it can't be serialized.