无法动态更改app.config值 [英] Unable to chage app.config value dynamically

问题描述

我正在使用Visual Studio，搜索后发现以下代码可以动态修改app.config文件

I am using Visual Studio, after searching i''ve found this following code to modify app.config file dynamically

Configuration configFile = ConfigurationManager.OpenExeConfiguration(Application.ExecutablePath);
configFile.AppSettings.Settings["Servername"].Value = "Server-PC";
configFile.Save();

但是在pmy项目中应用此方法时，出现以下错误

But while applying this in pmy project i am getting this following error

报价:

错误35找不到类型或名称空间名称"Configuration"(您是否缺少using指令或程序集引用? )

Error 35 The type or namespace name ''Configuration'' could not be found (are you missing a using directive or an assembly reference?)

和

报价:

错误36名称"ConfigurationManager"在当前上下文中不存在

Error 36 The name ''ConfigurationManager'' does not exist in the current context

有人可以建议我如何动态更改app.config值吗?

Can anyone please suggest me how to change app.config value dynamically?

推荐答案

在

System.Configuration

中添加引用您的项目.
如果添加了此引用，则在页面上的名称空间下方添加

in your project.
if you added this reference then add below namespace on your page

using System.Configuration;

最后，我得到了解决方案
选中此链接 [ ^ ]

Finally i''ve got the solution
check this link[^]

// Open App.Config of executable
            System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            // Add an Application Setting.
            config.AppSettings.Settings.Remove("connection");
            config.AppSettings.Settings.Add("connection", server);
            // Save the configuration file.
            config.Save(ConfigurationSaveMode.Modified);
            // Force a reload of a changed section.
            ConfigurationManager.RefreshSection("appSettings");

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