public static class SettingsExtensions
{
    public static bool TryGetValue<T>(this Settings settings, string key, out T value)
    {
        if (settings.Properties[key] != null)
        {
            value = (T) settings[key];
            return true;
        }

        value = default(T);
        return false;
    }

    public static bool ContainsKey(this Settings settings, string key)
    {
        return settings.Properties[key] != null;
    }

    public static void SetValue<T>(this Settings settings, string key, T value)
    {
        if (settings.Properties[key] == null)
        {
            var p = new SettingsProperty(key)
            {
                PropertyType = typeof(T),
                Provider = settings.Providers["LocalFileSettingsProvider"],
                SerializeAs = SettingsSerializeAs.Xml
            };
            p.Attributes.Add(typeof(UserScopedSettingAttribute), new UserScopedSettingAttribute());
            var v = new SettingsPropertyValue(p);
            settings.Properties.Add(p);
            settings.Reload();
        }
        settings[key] = value;
        settings.Save();
    }
}

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。

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;
        }
    }
}

ApplicationSettings类不支持将设置保存到app.config文件中。这在很大程度上是故意的;使用安全用户帐户运行的应用程序(如Vista UAC)没有对程序安装文件夹的写访问权。

您可以使用ConfigurationManager类来对抗系统。但简单的解决方法是进入设置设计器并将设置的范围更改为User。如果这造成了困难(例如，设置与每个用户相关)，则应该将Options特性放在单独的程序中，以便可以请求特权提升提示。或者放弃使用设置。

如果你使用Visual Studio，那么很容易获得持久化设置。在解决方案资源管理器中右键单击项目并选择属性。选择“设置”选项卡，如果“设置”不存在，则单击超链接。

使用Settings选项卡创建应用程序设置。Visual Studio创建文件设置。settings和settings . designer .settings包含从ApplicationSettingsBase继承的单例类settings。你可以从你的代码中访问这个类来读取/写入应用程序设置:

Properties.Settings.Default["SomeProperty"] = "Some Value";
Properties.Settings.Default.Save(); // Saves settings in application configuration file

此技术适用于控制台、Windows窗体和其他项目类型。

注意，您需要设置设置的scope属性。如果你选择了应用范围，那么Settings.Default。<你的属性>将是只读的。

参考:如何:在运行时使用c# - Microsoft Docs编写用户设置

registry/configurationSettings/XML参数似乎仍然非常活跃。随着技术的进步，我都用过了，但我最喜欢的是基于Threed的系统和隔离存储的结合。

下面的示例允许将名为properties的对象存储到隔离存储中的文件中。如:

AppSettings.Save(myobject, "Prop1,Prop2", "myFile.jsn");

可以使用以下方法恢复属性:

AppSettings.Load(myobject, "myFile.jsn");

这只是一个示例，并不是最佳实践的建议。

internal static class AppSettings
{
    internal static void Save(object src, string targ, string fileName)
    {
        Dictionary<string, object> items = new Dictionary<string, object>();
        Type type = src.GetType();

        string[] paramList = targ.Split(new char[] { ',' });
        foreach (string paramName in paramList)
            items.Add(paramName, type.GetProperty(paramName.Trim()).GetValue(src, null));

        try
        {
            // GetUserStoreForApplication doesn't work - can't identify.
            // application unless published by ClickOnce or Silverlight
            IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForAssembly();
            using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(fileName, FileMode.Create, storage))
            using (StreamWriter writer = new StreamWriter(stream))
            {
                writer.Write((new JavaScriptSerializer()).Serialize(items));
            }

        }
        catch (Exception) { }   // If fails - just don't use preferences
    }

    internal static void Load(object tar, string fileName)
    {
        Dictionary<string, object> items = new Dictionary<string, object>();
        Type type = tar.GetType();

        try
        {
            // GetUserStoreForApplication doesn't work - can't identify
            // application unless published by ClickOnce or Silverlight
            IsolatedStorageFile storage = IsolatedStorageFile.GetUserStoreForAssembly();
            using (IsolatedStorageFileStream stream = new IsolatedStorageFileStream(fileName, FileMode.Open, storage))
            using (StreamReader reader = new StreamReader(stream))
            {
                items = (new JavaScriptSerializer()).Deserialize<Dictionary<string, object>>(reader.ReadToEnd());
            }
        }
        catch (Exception) { return; }   // If fails - just don't use preferences.

        foreach (KeyValuePair<string, object> obj in items)
        {
            try
            {
                tar.GetType().GetProperty(obj.Key).SetValue(tar, obj.Value, null);
            }
            catch (Exception) { }
        }
    }
}