ASP.NET OpenWebConfiguration failing

Question

I'm trying to open the web configuration so I can encrypt/decrypt it but it's failing. I'm doing this on Web Developer 2010 Express on my desktop where I setup a website as a filesystem. Here are the ways I've tried.

Configuration config = WebConfigurationManager.OpenWebConfiguration(HttpContext.Current.Request.ApplicationPath);

Configuration config = WebConfigurationManager.OpenWebConfiguration("~");

Configuration config = WebConfigurationManager.OpenWebConfiguration("/");

Configuration config = WebConfigurationManager.OpenWebConfiguration("/web.config");

Configuration config = WebConfigurationManager.OpenWebConfiguration(/AppNameHere);

Every time I get error: An error occurred loading a configuration file: Failed to map the path '/'.

Any ideas?

Are you trying to access an element in <appSettings> or <applicationSettings>? — jrummell
– jrummell, Commented Dec 18, 2012 at 15:47
Actually I'm trying to access connectionStrings section and encrypt it. Maybe I can't do that in the same program that's using the config file. — user441521
– user441521, Commented Dec 18, 2012 at 15:59

Polyfun · Accepted Answer · 2015-01-30 10:13:51Z

16

If you are trying to open the web.config from within the application, you don't need to open it, just use:

var section = WebConfigurationManager.GetSection("mySection");

Just for you to know, the right parameter is:

Configuration config = WebConfigurationManager.OpenWebConfiguration("~/");

See: http://msdn.microsoft.com/es-es/library/system.web.configuration.webconfigurationmanager(v=vs.100).aspx

edited Jan 30, 2015 at 10:13

Polyfun

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answered Dec 18, 2012 at 15:51

Oscar

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Comments

Ain Ronquillo · Accepted Answer · 2013-04-04 09:25:02Z

9

Run your Visual Studio as Administrator. Cheers! :D

answered Apr 4, 2013 at 9:25

Ain Ronquillo

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2 Comments

Ain Ronquillo Over a year ago

Have the same problem but when I tried to run my visual studio as administrator, it works like a miracle. :)

mRizvandi Over a year ago

"An error occurred loading a configuration file: Failed to map the path '/'." its mean there is a permission error. and visual studio can not access the "web.config" file. its cause of well done running code sometimes...

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