如何更改运行时应用程序设置

I'm trying to change in runtime one key of my applications settings file, but it does not work.

我试图在运行时更改我的应用程序设置文件的一个键,但它不起作用。

I do on that way:

我这样做:

ConfigurationSettings.AppSettings["XPTO"] = "HELLO";

It seems that it only changes in memory, not on the file.

它似乎只改变了内存,而不是文件。

Does anyone knows how to do this?

有谁知道怎么做?

Thanks.

3 个解决方案

#1

Take a look at my overview of .NET settings files...In short, I think you want a user-scoped setting. It will behave more like you expect.

看看我对.NET设置文件的概述......总之,我认为你想要一个用户范围的设置。它会表现得更像你期望的。

Edit: If you are using the settings designer in Visual Studio, then simply change the "Scope" to "User". If not, you should be able to do the equivalent programmatically.

编辑:如果您在Visual Studio中使用设置设计器,则只需将“范围”更改为“用户”。如果没有,您应该能够以编程方式执行等效操作。

#2

The AppSettings file is not designed to be writable. It is designed to store configurations that will not change at run time but might change over time ie: DB Connection Strings, web service URL's, etc.

AppSettings文件不是可写的。它旨在存储在运行时不会更改但可能随时间更改的配置,即:DB连接字符串,Web服务URL等。

So, while it may be possible to update the file in reality you should re-asses if this value should be stored there.

因此,虽然有可能实际更新文件,但您应该重新评估是否应将该值存储在那里。

#3

Assuming your app has write permissions on the file...

假设您的应用对该文件具有写权限...



    Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);  // the config that applies to all users
    AppSettingsSection appSettings = config.AppSettings;

    if (appSettings.IsReadOnly() == false)
    {
        appSettings("Key").Value = "new value";

        config.Save();
    }

I'm ignoring all the possible exceptions that can be thrown...

我忽略了所有可能抛出的异常......

#1