如何在应用程序设置中存储对象列表 [英] How to store a list of objects in application settings

问题描述

我最近熟悉了C＃应用程序设置，这看起来很酷。

我正在寻找一种存储自定义对象列表的方法，但是我找不到方法！ >
实际上，我看到了发布存储int [] ，但是对这个问题没有帮助。

我试图更改该解决方案的配置，以使其适合于我的问题。的XML配置文件为：

I have recently became familiar with C# application settings, and it seems cool.
I was searching for a way to store a list of custom objects, but I couldn't find a way!
Actually I saw a post to store int[], but it wasn't helpful for this problem.
I tried to change the config of that solution in order to make it suitable for my problem. the XML config file of that was:

<Setting Name="SomeTestSetting" Type="System.Int32[]" Scope="User">
  <Value Profile="(Default)" />
</Setting>

我试图按下面在type属性中引用的方式处理我的对象，但这没有帮助无法识别我的对象...我尝试了 type = List和 type = tuple []

这两个选项都对我没有帮助！

I tried to address my object as quoted below in the type attribute but it wasn't helpful since it doesn't recognizing my object... I tried "type = List" and "type="tuple[]"
both of these options didn't help me!

我有一个班级看起来像：

I have a class looks like:

class tuple
    {
        public tuple()
        {
            this.font = new Font ("Microsoft Sans Serif",8);
            this.backgroundcolor_color = Color.White;
            this.foregroundcolor_color = Color.Black;
        }
        public string log { get; set; }
        public Font font { get ; set; }
        public String fontName { get; set; }
        public string foregroundcolor { get; set; }
        public Color foregroundcolor_color { get; set; }
        public string backgroundcolor { get; set; }
        public Color backgroundcolor_color { get; set; }
        public Boolean notification { get; set; }
    }

，我想在应用程序设置中存储一个列表。

那么有什么方法可以达到这个目的。

提前谢谢。

喝彩，

and I want to store a list in application setting.
So is there any way to achieve this purpose.
Thanks in advance.
Cheers,

推荐答案

您可以使用 BinaryFormatter 将元组列表序列化为字节数组，而Base64（以非常有效的方式）将字节数组存储为 string 。

You can use BinaryFormatter to serialize list of tuples as byte array and Base64 (as quite efficient way) to store byte array as string.

首先将类更改为类似的内容（提示： [SerializableAttribute] ）：

First of all change your class to something like that (hint: [SerializableAttribute]):

[Serializable()]
public class tuple
{
    public tuple()
    {
        this.font = new Font("Microsoft Sans Serif", 8);
    //....
}

在名为元组和类型 string 。

然后，您可以使用两种方法来加载和保存元组的通用列表（ List< tuple> ）：

Then you can use two methods to load and save generic list of tuples (List<tuple>):

void SaveTuples(List<tuple> tuples)
{
    using (MemoryStream ms = new MemoryStream())
    {
        BinaryFormatter bf = new BinaryFormatter();
        bf.Serialize(ms, tuples);
        ms.Position = 0;
        byte[] buffer = new byte[(int)ms.Length];
        ms.Read(buffer, 0, buffer.Length);
        Properties.Settings.Default.tuples = Convert.ToBase64String(buffer);
        Properties.Settings.Default.Save();
    }
}

List<tuple> LoadTuples()
{
    using (MemoryStream ms = new MemoryStream(Convert.FromBase64String(Properties.Settings.Default.tuples)))
    {
        BinaryFormatter bf = new BinaryFormatter();
        return (List<tuple>)bf.Deserialize(ms);
    }
}

示例：

List<tuple> list = new List<tuple>();
list.Add(new tuple());
list.Add(new tuple());
list.Add(new tuple());
list.Add(new tuple());
list.Add(new tuple());

// save list
SaveTuples(list);

// load list
list = LoadTuples();

我留下 null ，空字符串和异常检查你。

I leave null, empty string and exception checking up to you.

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