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DLL with configuration file

, 22 May 2011 CPOL
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Using configuration files in DLL is not trivial, but is very simple.
Using configuration files in DLL is not trivial.
To accomplish this, we must follow these steps:
  • Add a reference to System.Configuration
  • Add a new Application Configuration File and the name it [Your project].dll.config
  • Change the BuildAction property of the config file to Content
  • Change the Copy to Output property to "Copy Always"
 
After these steps, you can access the configuration file this way:
//Open the configuration file using the dll location
Configuration myDllConfig = 
       ConfigurationManager.OpenExeConfiguration(this.GetType().Assembly.Location);
// Get the appSettings section
AppSettingsSection myDllConfigAppSettings = 
       (AppSettingsSection)myDllConfig.GetSection("appSettings");
// return the desired field 
return myDllConfigAppSettings.Settings["MyAppSettingsKey"].Value; 
 
Your configuration file should look like this:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key ="MyAppSettingsKey" value="MyValue"/>
  </appSettings>
</configuration>
 
That's all. Hope you enjoy this tip.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

fmsalmeida
ResourceKraft
Ireland Ireland
I'm a Brazilian senior system analyst living in Limerick, Ireland. I've been working with software development since 1996.

Comments and Discussions

 
QuestionThanks for the straight-to-the-point instructions, it helped me a lot! PinmemberMember 124954625-May-14 6:20 
AnswerRe: Thanks for the straight-to-the-point instructions, it helped me a lot! Pinmemberfmsalmeida12-Nov-14 4:53 
QuestionNot working when updating config file values Pinmemberxyz from Bangalore20-Oct-13 19:50 
AnswerRe: Not working when updating config file values Pinmemberfmsalmeida12-Nov-14 4:57 
GeneralMy vote of 5 Pinmemberremi22211-Jul-13 8:27 
QuestionNot work in WebApplication [modified] PinmemberMlsoun1-Oct-12 3:04 
AnswerRe: Not work in WebApplication PinmemberFregate19-Feb-13 17:03 
GeneralRe: Not work in WebApplication Pinmemberfmsalmeida20-Feb-13 1:12 
GeneralRe: Not work in WebApplication PinmemberFregate20-Feb-13 13:15 
GeneralRe: Not work in WebApplication Pinmembereng_george128-Jan-14 2:30 
QuestionVS10 Saves Setting to Project.dll.config PinmemberMember 462571327-Mar-12 6:24 
GeneralReason for my vote of 5 This solved a problem that I've been... Pinmemberjtdavies8-Feb-12 9:54 
GeneralReason for my vote of 5 Nice, I like it, and I am bookmarkin... PinmemberFDW3-Nov-11 2:06 
GeneralReason for my vote of 5 It is very good :) PinmemberCaner Korkmaz23-Aug-11 1:14 
GeneralReason for my vote of 5 Bookmarked for future ref. PinmemberKeithAMS2-Jun-11 23:40 
QuestionPossible in .NET 1.1? PinmemberKeithAMS28-Oct-11 0:28 
AnswerRe: Possible in .NET 1.1? Pinmemberfmsalmeida28-Oct-11 4:18 
GeneralGood Tip PinmemberKeithAMS2-Jun-11 23:40 
GeneralRe: Good Tip Pinmemberfmsalmeida3-Jun-11 3:32 
I'm glad you like it
thanks for the vote.
GeneralExplain why.... PinmemberEngleA27-May-11 4:28 
GeneralRe: Explain why.... Pinmemberfmsalmeida27-May-11 5:16 
QuestionToo complex? PinmemberRiz Thon23-May-11 21:03 
AnswerRe: Too complex? Pinmemberfmsalmeida24-May-11 5:10 

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