How Can I Serialize a Class Containing a Generic Dictionary Member in C#?

Serializing a class containing generic dictionary members in C#

While trying to serialize a profile class, an error was encountered while trying to serialize the Dictionary member. Despite using Dictionary, HybridDictionary and Hashtable, I still get the following error: "Unable to serialize member App.Configfile.mappedDrives".

Problem Analysis

Normally, Dictionary and Hashtable are serializable, but some types of Dictionary objects may not be inherently serializable. In this case, the problem stems from trying to serialize a Dictionary of a generic type.

Solution

Paul Welter's blog provides an XML serializable generic dictionary that implements the IXmlSerializable interface, allowing efficient serialization and deserialization.

Implementation of solution

The solution can be implemented using the following code snippet:

using System;
using System.Collections.Generic;
using System.Text;
using System.Xml.Serialization;

[XmlRoot("dictionary")]
public class SerializableDictionary<TKey, TValue> : Dictionary<TKey, TValue>, IXmlSerializable
{
    // ... 省略 SerializableDictionary 类的实现细节 ...
}

In summary, to serialize a class containing a generic Dictionary member, you may need to implement a custom XML serializable dictionary class that explicitly supports the IXmlSerializable interface. This will allow efficient serialization and deserialization of dictionaries.

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