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

Question

我已经在app.config中存储了我的应用程序的配置,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设置了此密钥(不是在用户级别).

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DatabasePath在配置文件中保存值:

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,在重新启动应用程序之前,应用程序不会加载新设置; 有没有办法在运行时重新加载配置设置？

我还想applicationSettings用一个变量值替换section(AleTest.Properties.Settings)名称的固定值,在框架中存在一个假设这个值的变量(AleTest.Properties.Settings)？

Answer 1

您需要调用ConfigurationManager.RefreshSection才能从磁盘重新读取值.

Answer 2

我做了一些测试,这是结果.

对于自动生成的类Settings,调用ConfigurationManager.RefreshSection("applicationSettings");不会对标记为的成员应用修改后的值ApplicationScopedSettingAttribute,它会将更改应用于将来通过ConfigurationManager成员调用(并且不确定UserScopedSettingAttribute).

而是打电话 Settings.Default.Reload();