如何编辑应用程序配置设置？App.config最好的方法去？

Question

对于我的项目,我有通过项目属性中的"设置"添加的设置.

我很快发现直接编辑app.config文件似乎没有真正更新设置值.似乎我在进行更改然后重新编译时必须查看项目属性.

• 我想知道...... 处理项目的可自定义设置的最佳和最简单的方法是什么- 认为这对于.Net如何处理它是一个明智的选择 ...对我很羞耻.

• 是否可以使用其中一个设置,AppSettings, ApplicationSettings或UserSettings来处理这个问题？

将我的设置写入自定义配置文件并自行处理是否更好？

现在...... 我正在寻找最快的解决方案!

我的环境是C#,.Net 3.5和Visual Studio 2008.

更新

我正在尝试执行以下操作:

    protected override void Save()
    {
        Properties.Settings.Default.EmailDisplayName = this.ddEmailDisplayName.Text;
        Properties.Settings.Default.Save();
    }

编译时给我一个只读错误.

Answer 1

这太傻了......我想我不得不为浪费每个人的时间而道歉!但看起来我只需要将范围设置为User而不是Application,我可以编写新值.

Answer 2

我也试图解决这个需求，我现在有一个漂亮漂亮的 ConsoleApplication，我想分享：（App.config）

您将看到的是：

1. 如何阅读所有 AppSetting 属性
2. 如何插入新属性
3. 如何删除属性
4. 如何更新属性

玩得开心！

    public void UpdateProperty(string key, string value)
    {
        Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        KeyValueConfigurationCollection appSettings = config.AppSettings.Settings;


        // update SaveBeforeExit
        config.AppSettings.Settings[key].Value = value;
        Console.Write("...Configuration updated: key "+key+", value: "+value+"...");

        //save the file
        config.Save(ConfigurationSaveMode.Modified);
        Console.Write("...saved Configuration...");
        //relaod the section you modified
        ConfigurationManager.RefreshSection(config.AppSettings.SectionInformation.Name);
        Console.Write("...Configuration Section refreshed...");
    }

    public void ReadAppSettingsProperty()
    {
        try
        {
            var section = ConfigurationManager.GetSection("applicationSettings");

            // Get the AppSettings section.
            NameValueCollection appSettings = ConfigurationManager.AppSettings;

            // Get the AppSettings section elements.
            Console.WriteLine();
            Console.WriteLine("Using AppSettings property.");
            Console.WriteLine("Application settings:");

            if (appSettings.Count == 0)
            {
            Console.WriteLine("[ReadAppSettings: {0}]", "AppSettings is empty Use GetSection command first.");
            }
            for (int i = 0; i < appSettings.Count; i++)
            {
                Console.WriteLine("#{0} Key: {1} Value: {2}",
                i, appSettings.GetKey(i), appSettings[i]);
            }
        }
        catch (ConfigurationErrorsException e)
        {
            Console.WriteLine("[ReadAppSettings: {0}]", e.ToString());
        }

    }


    public void updateAppSettingProperty(string key, string value)
    {
        // Get the application configuration file.
        System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        string sectionName = "appSettings";


        config.AppSettings.Settings.Remove(key);
        config.AppSettings.Settings.Add(key, value);

        SaveConfigFile(config);
    }

    public void insertAppSettingProperty(string key, string value)
    {
        // Get the application configuration file.
        System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        string sectionName = "appSettings";

        config.AppSettings.Settings.Add(key, value);

        SaveConfigFile(config);
    }

    public void deleteAppSettingProperty(string key)
    {
        // Get the application configuration file.
        System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
        config.AppSettings.Settings.Remove(key);

        SaveConfigFile(config);
    }

    private static void SaveConfigFile(System.Configuration.Configuration config)
    {
        string sectionName = "appSettings";

        // Save the configuration file.
        config.Save(ConfigurationSaveMode.Modified);

        // Force a reload of the changed section. This  
        // makes the new values available for reading.
        ConfigurationManager.RefreshSection(sectionName);

        // Get the AppSettings section.
        AppSettingsSection appSettingSection =
          (AppSettingsSection)config.GetSection(sectionName);

        Console.WriteLine();
        Console.WriteLine("Using GetSection(string).");
        Console.WriteLine("AppSettings section:");
        Console.WriteLine(appSettingSection.SectionInformation.GetRawXml());
    }    
}

配置文件如下所示：

<configuration>
<configSections>
</configSections>
<appSettings>
    <add key="aNewKey1" value="aNewValue1" />
</appSettings>

好吧，所以我在使用此解决方案时对 AppSettings 没有任何问题！玩得开心... ;-） ！