在设置文件中的关键值存储

问题描述

我开发在C＃中，这需要存储在设置文件键值对的应用程序。
我试图想保存设置文件字典的ArrayList，但它没有。这里是我做了什么：

I am developing an application in C#, which needs to store a key value pair in settings file.I tried tried to save an arraylist of dictionary in settings file ,but it fails .Here is what i have done:

if (Settings1.Default.arraylst == null)
       {
           Settings1.Default.arraylst = new System.Collections.ArrayList();
       }

       Dictionary<string, string> dd = new Dictionary<string, string>();
       dd.Add("1", "1");

       Settings1.Default.arraylst.Add(dd);              
       Settings1.Default.Save();

当我重新启动arrarylist成为空..

When i restarted the application the arrarylist became null..

提前....

推荐答案

这是因为一般的字典不是序列化的一些原因，尝试使用谢谢这个

That's because generic dictionary is not serializable for some reasons,try use this one

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
}

这是我在这里找到

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