How to use a App config file in WPF applications

Question

I created an App config file in my WPF application   lt  xml version  quot 1 0 quot  encoding  quot utf-8 quot    gt   lt configuration gt     lt appsettings gt       lt add key  quot xmlDataDirectory quot  value  quot c  testdata quot   gt     lt  appsettings gt   lt  configuration gt   Then I try to read the value out with this  string xmlDataDirectory   ConfigurationSettings AppSettings Get  quot xmlDataDirectory quot     But it says this is obsolete and that I should use ConfigurationManager which I can t find  even searching in the class view  Does anyone know how to use config files like this in WPF

User · Answer

You have to reference System Configuration via explorer  not only append using System Configuration   Then you can write   string xmlDataDirectory        System Configuration ConfigurationManager AppSettings Get  xmlDataDirectory      Tested with VS2010  thanks to www developpez net   Hope this helps

User · Answer

In your app config  change your appsetting to   lt applicationSettings gt       lt WpfApplication1 Properties Settings gt           lt setting name  quot appsetting quot  serializeAs  quot String quot  gt               lt value gt c  testdata xml lt  value gt           lt  setting gt       lt  WpfApplication1 Properties Settings gt   lt  applicationSettings gt   Then  in the code-behind  string xmlDataDirectory   WpfApplication1 Properties Settings Default appsetting ToString

User · Answer

You have to reference the System Configuration assembly which is in GAC  Use of ConfigurationManager is not WPF-specific  it is the privileged way to access configuration information for any type of application  Please see Microsoft Docs - ConfigurationManager Class for further info

User · Answer

This also works   WpfApplication1 Properties Settings Default  appsetting   ToString

User · Answer

I have a Class Library WPF Project  and I Use        Read Settings Dim value as string   My Settings my key value    new value    Write Settings My Settings my key   value My Settings Save

User · Answer

You can change configuration file schema back to DotNetConfig xsd via properties of the app config file  To find destination of needed schema  you can search it by name or create a WinForms application  add to project the configuration file and in it s properties  you ll find full path to file

User · Answer

In my case  I followed the steps below  App config  lt configuration gt        lt startup gt           lt supportedRuntime version  quot v4 0 quot  sku  quot  NETFramework Version v4 5 quot    gt     lt  startup gt     lt appSettings gt      lt add key  quot POCPublishSubscribeQueueName quot  value  quot FormatName Direct OS localhost Private  POCPublishSubscribe quot   gt    lt  appSettings gt    lt  configuration gt   Added System Configuartion to my project  Added using System Configuration statement in file at top  Then used this statement  string queuePath   ConfigurationManager AppSettings  quot POCPublishSubscribeQueueName quot   ToString

User · Answer

You have to add the reference to System configuration in your solution  Also  include using System Configuration   Once you do that  you ll have access to all the configuration settings

[c#] How to use a App.config file in WPF applications?

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