How to fix warning "System.Configuraion.ConfigurationSettings.AppSettings" is obsolete in Visual Studio

Figure 2. Adding reference "System.Configuration"

Usage "Application configuration file" is very good in creating simple applications. It's very good to store in it values like path, string for database connection or something like this. I use it for a long time. But not so long ago I have noticed that Studio highlights string where configuration file used: (read more...)

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