ConfigurationManager not found

Question

I am new to VS 3.5 and I am writing a console app that needs to pull some key values from the app.config file.

I have:

Imports System.Configuration

and I am trying to reference ConfigurationManager.AppSettings but this generates an error:

Name ConfigurationManager is not declared

What am I missing?

score 94 · Accepted Answer · answered Dec 13 '10 at 16:38

94

Make sure you have a reference to the assembly System.Configuration.dll

answered Dec 13 '10 at 16:38

Philip Fourie

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Yes, thank you for responding. I did eventually figure that on my own! – DeveloperM Dec 13 '10 at 17:04

score 23 · Answer 2 · answered Oct 14 '16 at 11:26

23

Project -> Add References -> .NET -> select System.Configuration

answered Oct 14 '16 at 11:26

GorvGoyl

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score 14 · Answer 3 · edited May 12 '20 at 17:42

14

I had to Install NuGet package System.Configuration.ConfigurationManager in my Visual Studio 2019 C# project.

E.g.,

Install-Package System.Configuration.ConfigurationManager -Version 4.7.0

edited May 12 '20 at 17:42

Jeremy Caney

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answered May 12 '20 at 16:31

MTMDev

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This is the correct way to go for newer Visual Studio installations. – My Stack Overfloweth Jun 17 '22 at 20:35

score 9 · Answer 4 · answered Jul 31 '13 at 19:31

9

I had this problem myself and actually included the reference to System.Configuration, and it STILL wouldn't show up.

I had to go to the Build menu, select Clean, and then rebuild.

Posting because in six months when I see this again I'll probably forget what I did...

answered Jul 31 '13 at 19:31

Tim

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I done this , but not worked . So, closed project and then reopen project. worked fine. – virender Mar 05 '20 at 08:58

score 0 · Answer 5 · answered Jul 17 '12 at 12:58

0

Add the reference to System.Configuration:

Menu Bar -> Project -> Add Reference... -> .NET (Tab) -> System.Configuration -> OK

answered Jul 17 '12 at 12:58

Qsiris

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score 0 · Answer 6 · edited Feb 08 '16 at 23:50

0

Try using System.Configuration;
OR
Try to add reference by selecting
Project -> Add References -> .NET -> select System.Configuration

now you can use "ConfigurationManager"

edited Feb 08 '16 at 23:50

Brian Tompsett - 汤莱恩

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answered Feb 08 '16 at 16:50

Harsha

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ConfigurationManager not found

6 Answers6