C # custom serializable Dictionary type

XML Serializable Generic Dictionary
XML Serializable Generic Dictionary
For some reason, the generic Dictionary in. net 2.0 is not XML serializable. The following code snippet is a xml serializable generic dictionary. The dictionary is serialable by implementing the IXmlSerializable interface.

Using System;

Using System. Collections. Generic;

Using System. Text;

Using System. Xml. Serialization;

 

[XmlRoot ("dictionary")]

Public class SerializableDictionary <TKey, TValue>

: Dictionary <TKey, TValue>, IXmlSerializable

{

# Region IXmlSerializable Members

Public System. Xml. Schema. XmlSchema GetSchema ()

{

Return null;

}

 

Public void ReadXml (System. Xml. XmlReader reader)

{

XmlSerializer keySerializer = new XmlSerializer (typeof (TKey ));

XmlSerializer valueSerializer = new XmlSerializer (typeof (TValue ));

 

Bool wasEmpty = reader. IsEmptyElement;

Reader. Read ();

 

If (wasEmpty)

Return;

 

While (reader. NodeType! = System. Xml. XmlNodeType. EndElement)

{

Reader. ReadStartElement ("item ");

 

Reader. ReadStartElement ("key ");

TKey key = (TKey) keySerializer. Deserialize (reader );

Reader. ReadEndElement ();

 

Reader. ReadStartElement ("value ");

TValue value = (TValue) valueSerializer. Deserialize (reader );

Reader. ReadEndElement ();

 

This. Add (key, value );

 

Reader. ReadEndElement ();

Reader. MoveToContent ();

}

Reader. ReadEndElement ();

}

 

Public void WriteXml (System. Xml. XmlWriter writer)

{

XmlSerializer keySerializer = new XmlSerializer (typeof (TKey ));

XmlSerializer valueSerializer = new XmlSerializer (typeof (TValue ));

 

Foreach (TKey key in this. Keys)

{

Writer. WriteStartElement ("item ");

 

Writer. WriteStartElement ("key ");

KeySerializer. Serialize (writer, key );

Writer. WriteEndElement ();

 

Writer. WriteStartElement ("value ");

TValue value = this [key];

ValueSerializer. Serialize (writer, value );

Writer. WriteEndElement ();

 

Writer. WriteEndElement ();

}

}

# Endregion

}

 

From strayromeo