如何在c#中序列化哈希表

Question

我已经实现了会话状态模式sqlserver,当我运行我的应用程序时,我面临着哈希表的XML序列化错误.我的班级看起来像:

[Serializable]
    public class ProjectSetup{
    private System.Collections.Hashtable _ConfigTable;
   //and other properties here

   public System.Collections.Hashtable ConfigTable
        {
            get { return _ConfigTable; }
        }

}

现在我想知道如何序列化hastable或如果有另一种选择请告诉我.

并且确切的错误是:"无法序列化System.Collections.Hashtable类型的成员ProjectSetup.ConfigTable,因为它实现了IDictionary"

Answer 1

一种方法是在您的类上实现 IXmlSerialized 并手动序列化哈希表。请参阅这篇文章了解更多详细信息。

public void WriteXml(System.Xml.XmlWriter writer)
{
    // Used while Serialization

    // Serialize each BizEntity this collection holds
    foreach( string key in this.Dictionary.Keys )
    {
        Serializer.Serialize(writer, this.Dictionary[key]);
    }
}

public void ReadXml(System.Xml.XmlReader reader)
{
    // Used while Deserialization

    // Move past container
    reader.Read();

    // Deserialize and add the BizEntitiy objects
    while( reader.NodeType != XmlNodeType.EndElement )
    {
        BizEntity entity;

        entity = Serializer.Deserialize(reader) as BizEntity;
        reader.MoveToContent();
        this.Dictionary.Add(entity.Key, entity);
    }
}