在运行时保存并重新加载 app.config(applicationSettings) [英] Save and reload app.config(applicationSettings) at runtime

问题描述

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键，然后我在应用程序级别设置了这个键(不是在用户等级).

I've stored configuration of my application in the app.config, by Visual Studio I've created some application key on the settings tab of project properties dialog, then I've set this key at application level(NOT at user level).

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

Visual Studio automatically generate the following xml file (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和重新加载设置，这是我的代码，允许在配置文件中保存值 DatabasePath:

Now I want to save and reload the settings at runtime, here's my code that allow to save the value DatabasePath in the configuration file:

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，在我重新启动应用程序之前，应用程序不会加载此代码的新设置；有没有办法在运行时重新加载配置设置?

The problem is that with this code the new settings aren't loaded by application until I restart the application; is there a way to reload the config settings at runtime?

我也想用一个变量值替换applicationSettings部分名称的固定值(AleTest.Properties.Settings)，框架中存在一个变量假设这个值(AleTest.Properties.设置)?

I also want to replace the fixed value of the name of applicationSettings section (AleTest.Properties.Settings) with a variable value, exist a variable in the framework the assume this value (AleTest.Properties.Settings) ?

推荐答案

您需要致电 ConfigurationManager.RefreshSection 以便从磁盘重新读取值.

You need to make a call to ConfigurationManager.RefreshSection in order to have the values re-read from disk.

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