在运行时保存并重新加载 app.config(applicationSettings)

我已将应用程序的配置存储在 app.config 中，通过 Visual Studio，我在项目属性对话框的设置选项卡上创建了一些应用程序密钥，然后我在应用程序级别（而不是用户级别）设置了该密钥。

Visual Studio 自动生成以下 xml 文件 (app.config)：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
        <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
            <section name="AleTest.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
        </sectionGroup>
    </configSections>
    <applicationSettings>
        <AleTest.Properties.Settings>
            <setting name="DatabasePath" serializeAs="String">
                <value>Test.s3db</value>
            </setting>
            <setting name="DatabaseUser" serializeAs="String">
                <value />
            </setting>
            <setting name="DatabasePass" serializeAs="String">
                <value />
            </setting>
        </AleTest.Properties.Settings>
    </applicationSettings>
</configuration>

现在我想在运行时保存并重新加载设置，这是我的代码，允许保存值DatabasePath在配置文件中：

Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

ConfigurationSectionGroup applicationSectionGroup = config.GetSectionGroup("applicationSettings");
ConfigurationSection applicationConfigSection = applicationSectionGroup.Sections["AleTest.Properties.Settings"];
ClientSettingsSection clientSection = (ClientSettingsSection)applicationConfigSection;

//Database Configuration Setting
SettingElement applicationSetting = clientSection.Settings.Get("DatabasePath");
applicationSetting.Value.ValueXml.InnerXml = this.textBoxPath.Text.Trim();

applicationConfigSection.SectionInformation.ForceSave = true;
config.Save();

问题是，使用此代码，直到我重新启动应用程序后，应用程序才会加载新设置；有没有办法在运行时重新加载配置设置？

我也想更换名称的固定值applicationSettings部分（AleTest.Properties.Settings）具有变量值，框架中存在一个变量并假设该值（AleTest.Properties.Settings）？

您需要致电ConfigurationManager.RefreshSection http://msdn.microsoft.com/en-us/library/system.configuration.configurationmanager.refreshsection.aspx为了从磁盘重新读取值。