到目前为止，我发现了另一种解决方案，用于从Xamarin PCL项目的App.config文件中获取密钥"StorageConnectionString".

So far, I found another solution to get key "StorageConnectionString" from App.config file for Xamarin PCL project.

您需要安装此软件包，该软件包支持获取App.config文件中密钥的值: PCLAppConfig

You need to install this package which support to get the value of key in App.config file: PCLAppConfig

然后您可以通过行代码获取值:

Then you can get the value by line code:

string storageConnectionString = PCLAppConfig.ConfigurationManager.AppSettings ["StorageConnectionString"];

string storageConnectionString = PCLAppConfig.ConfigurationManager.AppSettings["StorageConnectionString"];