在.NET中從app.config或web.config讀取設置 - Reading settings from app.config or web.config in .NET

問題：

I'm working on a C# class library that needs to be able to read settings from the web.config or app.config file (depending on whether the DLL is referenced from an ASP.NET web application or a Windows Forms application). 我正在使用一個C＃類庫，該類須要可以從web.config或app.config文件中讀取設置（取決於DLL是從ASP.NET Web應用程序仍是Windows Forms應用程序引用的）。

I've found that 我發現

ConfigurationSettings.AppSettings.Get("MySetting")

works, but that code has been marked as deprecated by Microsoft. 能夠，可是該代碼已被Microsoft標記爲已棄用。

I've read that I should be using: 我讀過我應該使用：

ConfigurationManager.AppSettings["MySetting"]

However, the System.Configuration.ConfigurationManager class doesn't seem to be available from a C# Class Library project. 可是，C＃類庫項目中彷佛沒有System.Configuration.ConfigurationManager類。

What is the best way to do this? 作這個的最好方式是什麼？

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解決方案：

參考一： https://stackoom.com/question/4zPI/在-NET中從app-config或web-config讀取設置
參考二： https://oldbug.net/q/4zPI/Reading-settings-from-app-config-or-web-config-in-NET