reading from app config file

Question

I am trying to read StartingMonthColumn and CategoryHeadingColumn from the below app config file using the code  ConfigurationSettings AppSettings  StartingMonthColumn     but it is returning null  also ConfigurationSettings AppSettings Count returns zero  Please help me to read this in my windows application   lt configuration gt       lt configSections gt           lt sectionGroup name  userSettings  type  System Configuration UserSettingsGroup  System  Version 2 0 0 0  Culture neutral  PublicKeyToken b77a5c561934e089   gt               lt section name  CTARepository Properties Settings  type  System Configuration ClientSettingsSection  System  Version 2 0 0 0  Culture neutral  PublicKeyToken b77a5c561934e089  allowExeDefinition  MachineToLocalUser  requirePermission  false    gt           lt  sectionGroup gt       lt  configSections gt       lt userSettings gt           lt CTARepository Properties Settings gt               lt setting name  Setting  serializeAs  String  gt                   lt value   gt               lt  setting gt           lt  CTARepository Properties Settings gt       lt  userSettings gt       lt appSettings gt           lt add key  StartingMonthColumn  value  7   gt           lt add key  CategoryHeadingColumn  value  1   gt       lt  appSettings gt   lt  configuration gt

User · Answer

Try to rebuild your project  -  It copies the content of App config to    lt YourProjectName exe gt  config  in the build library

User · Answer

ConfigurationSettings AppSettings is deprecated  see here   http   msdn microsoft com en-us library system configuration configurationsettings appsettings aspx  That said  it should still work   Just a suggestion  but have you confirmed that your application configuration is the one your executable is using   Try attaching a debugger and checking the following value   AppDomain CurrentDomain SetupInformation ConfigurationFile   And then opening the configuration file and verifying the  section is there as you expected

User · Answer

Try   string value   ConfigurationManager AppSettings key     For more details check   Reading Keys from App Config

User · Answer

Also add the key  StartingMonthColumn  in App config that you run application from  for example in the App config of the test project

User · Answer

This   Console WriteLine   StartingMonthColumn is  0    ConfigurationManager AppSettings  StartingMonthColumn       works fine for me   Note that ConfigurationManager is in the System Configuration namespace  so you ll likely want a using System Configuration  statement   and that since what you read in has a string type you ll need to parse what you read in to use it as a number   Also  be sure you set system configuration dll as a reference in your project or build script

User · Answer

ConfigurationSettings AppSettings is obsolete  you should use ConfigurationManager AppSettings instead  you will need to add a reference to System Configuration   int value   Int32 Parse ConfigurationManager AppSettings  StartingMonthColumn       If you still have problems reading in your app settings then check that your app config file is named correctly  Specifically  it should be named according to the executing assembly i e  MyApp exe config  and should reside in the same directory as MyApp exe

User · Answer

The reason is simple  your call to ConfigurationSettings AppSettings is not returning the required config file  Please try any of the following ways    Make sure your app config has the same name as your application s exe file - with the extension  config appended eg MyApp exe config OR you can use ConfigurationManager OpenExeConfiguration Assembly GetExecutingAssembly   Location  AppSettings  StartingMonthColumn     Hope this helps

User · Answer

Just for the future reference  you just need to add System Configuration to your references library

[c#] reading from app.config file

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