如果你打算保存到与你的可执行文件相同目录下的文件，这里有一个使用JSON格式的很好的解决方案:

using System;
using System.IO;
using System.Web.Script.Serialization;

namespace MiscConsole
{
    class Program
    {
        static void Main(string[] args)
        {
            MySettings settings = MySettings.Load();
            Console.WriteLine("Current value of 'myInteger': " + settings.myInteger);
            Console.WriteLine("Incrementing 'myInteger'...");
            settings.myInteger++;
            Console.WriteLine("Saving settings...");
            settings.Save();
            Console.WriteLine("Done.");
            Console.ReadKey();
        }

        class MySettings : AppSettings<MySettings>
        {
            public string myString = "Hello World";
            public int myInteger = 1;
        }
    }

    public class AppSettings<T> where T : new()
    {
        private const string DEFAULT_FILENAME = "settings.json";

        public void Save(string fileName = DEFAULT_FILENAME)
        {
            File.WriteAllText(fileName, (new JavaScriptSerializer()).Serialize(this));
        }

        public static void Save(T pSettings, string fileName = DEFAULT_FILENAME)
        {
            File.WriteAllText(fileName, (new JavaScriptSerializer()).Serialize(pSettings));
        }

        public static T Load(string fileName = DEFAULT_FILENAME)
        {
            T t = new T();
            if(File.Exists(fileName))
                t = (new JavaScriptSerializer()).Deserialize<T>(File.ReadAllText(fileName));
            return t;
        }
    }
}

我不喜欢使用网络的解决方案。Config或app.config。尝试读取您自己的XML。看一下XML设置文件-没有更多的web.config。

其他选项，除了使用自定义XML文件，我们还可以使用更用户友好的文件格式:JSON或YAML文件。

如果你使用。net 4.0动态，这个库真的很容易使用 (序列化，反序列化，嵌套对象支持和排序输出 +将多个设置合并为一个)JsonConfig(使用相当于ApplicationSettingsBase) .NET YAML配置库…我还没找到一个 易于作为JsonConfig使用

您可以将您的设置文件存储在多个特殊的文件夹中(针对所有用户和每个用户)，如环境所列。SpecialFolder枚举和多个文件(默认为只读，每个角色，每个用户，等等)

获取特殊文件夹路径的示例 % AppData %

如果需要使用多个设置，可以将这些设置合并:例如“default + BasicUser + AdminUser”的设置合并。您可以使用自己的规则:最后一个规则覆盖值，等等。

是的，可以保存配置——但这在很大程度上取决于您选择的保存方式。让我来描述一下技术上的差异，这样你就可以理解你有哪些选择:

首先，你需要区分，你是想在*.exe中使用applicationSettings还是AppSettings。config(也就是Visual Studio中的App.config)文件-这里描述的是基本的区别。

两者都提供了不同的保存更改的方法:

The AppSettings allow you to read and write directly into the config file via config.Save(ConfigurationSaveMode.Modified);, where config is defined as: config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); The applicationSettings allow to read, but if you write changes (via Properties.Settings.Default.Save();) it will be written on a per-user basis, stored in a special place (e.g. C:\Documents and Settings\USERID\Local Settings\Application Data\FIRMNAME\WindowsFormsTestApplicati_Url_tdq2oylz33rzq00sxhvxucu5edw2oghw\1.0.0.0). As Hans Passant mentioned in his answer, this is because a user usually has restricted rights to Program Files and cannot write to it without invoking the UAC prompt. A disadvantage is if you're adding configuration keys in the future you need to synchronize them with every user profile.

但也有一些其他的选择:

Since .NET Core (and .NET 5 and 6) a 3rd option is the appsettings.json file which uses Microsoft's configuration abstraction (and also the secrets.json file which is stored in your user profile rather than in the assemblies directories). But usually WinForms isn't using it, so I am mentioning it just for completeness. However, here are some references how to read and write the values. Alternatively you can use Newtonsoft JSON to read and write the appsettings.json file, but it is not limited to that: you can also create your own json files with that method. As mentioned in the question, there is a 4th option: If you treat the configuration file as XML document, you can load, modify and save it by using the System.Xml.Linq.XDocument class. It is not required to use a custom XML file, you can read the existing config file; for querying elements, you can even use Linq queries. I have given an example here, check out the function GetApplicationSetting there in the answer. A 5th option is to store settings in the registry. How you can do it is described here. Last not least, there is a 6th option: You can store values in the environment (system environment or environment of your account). In Windows settings (the cogwheel in the Windows menu), type in "environment" in the search bar and add or edit them there. To read them, use var myValue = Environment.GetEnvironmentVariable("MyVariable");. Note that your application usually needs to be restarted to get the updated environment settings.

如果你需要加密来保护你的价值，看看这个答案。它描述了如何使用微软的DPAPI来存储加密的值。

如果你想支持你自己的文件，无论是XML还是JSON，知道程序集运行的目录可能会很有用:

var assemblyDLL = System.Reflection.Assembly.GetExecutingAssembly();
var assemblyDirectory = System.IO.Path.GetDirectoryName(assemblyDLL.Location);

您可以使用assemblyDirectory作为存储文件的基本目录。

登记处是不允许的。您不确定使用您的应用程序的用户是否有足够的权限写入注册表。

您可以使用app.config文件保存应用程序级别的设置(对于使用您的应用程序的每个用户都是相同的)。

我将把特定于用户的设置存储在一个XML文件中，该文件将保存在隔离存储或SpecialFolder中。ApplicationData目录。

其次，从。net 2.0开始，可以将值存储回app.config文件。

一种简单的方法是使用配置数据对象，将其保存为本地文件夹中具有应用程序名称的XML文件，并在启动时读取它。

下面是存储表单位置和大小的示例。

配置数据对象是强类型的，易于使用:

[Serializable()]
public class CConfigDO
{
    private System.Drawing.Point m_oStartPos;
    private System.Drawing.Size m_oStartSize;

    public System.Drawing.Point StartPos
    {
        get { return m_oStartPos; }
        set { m_oStartPos = value; }
    }

    public System.Drawing.Size StartSize
    {
        get { return m_oStartSize; }
        set { m_oStartSize = value; }
    }
}

用于保存和加载的管理器类:

public class CConfigMng
{
    private string m_sConfigFileName = System.IO.Path.GetFileNameWithoutExtension(System.Windows.Forms.Application.ExecutablePath) + ".xml";
    private CConfigDO m_oConfig = new CConfigDO();

    public CConfigDO Config
    {
        get { return m_oConfig; }
        set { m_oConfig = value; }
    }

    // Load configuration file
    public void LoadConfig()
    {
        if (System.IO.File.Exists(m_sConfigFileName))
        {
            System.IO.StreamReader srReader = System.IO.File.OpenText(m_sConfigFileName);
            Type tType = m_oConfig.GetType();
            System.Xml.Serialization.XmlSerializer xsSerializer = new System.Xml.Serialization.XmlSerializer(tType);
            object oData = xsSerializer.Deserialize(srReader);
            m_oConfig = (CConfigDO)oData;
            srReader.Close();
        }
    }

    // Save configuration file
    public void SaveConfig()
    {
        System.IO.StreamWriter swWriter = System.IO.File.CreateText(m_sConfigFileName);
        Type tType = m_oConfig.GetType();
        if (tType.IsSerializable)
        {
            System.Xml.Serialization.XmlSerializer xsSerializer = new System.Xml.Serialization.XmlSerializer(tType);
            xsSerializer.Serialize(swWriter, m_oConfig);
            swWriter.Close();
        }
    }
}

现在你可以创建一个实例，并在你的表单的加载和关闭事件中使用:

    private CConfigMng oConfigMng = new CConfigMng();

    private void Form1_Load(object sender, EventArgs e)
    {
        // Load configuration
        oConfigMng.LoadConfig();
        if (oConfigMng.Config.StartPos.X != 0 || oConfigMng.Config.StartPos.Y != 0)
        {
            Location = oConfigMng.Config.StartPos;
            Size = oConfigMng.Config.StartSize;
        }
    }

    private void Form1_FormClosed(object sender, FormClosedEventArgs e)
    {
        // Save configuration
        oConfigMng.Config.StartPos = Location;
        oConfigMng.Config.StartSize = Size;
        oConfigMng.SaveConfig();
    }

生成的XML文件也是可读的:

<?xml version="1.0" encoding="utf-8"?>
<CConfigDO xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <StartPos>
    <X>70</X>
    <Y>278</Y>
  </StartPos>
  <StartSize>
    <Width>253</Width>
    <Height>229</Height>
  </StartSize>
</CConfigDO>