Use a file in a c# application

Question

I'd like to add a config.json file to my project and have a class read from the file.

I added the file in VS and added the Build Action = Content and Copy to output directory = Copy always properties.

When building, the file is copied to C:\...\mysolution\myproject\bin\Debug.

But File.ReadAllText(@"config.json") throws a FileNotFoundException. Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location); doesn't return the folder where the file is copied: C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\Temporary ASP.NET Files\\root\\2158bea8\\d46fc01c\\assembly\\dl3\\eca14761\\49a747bf_be72d001

@MohammedElSayed How can I find out? It doesn't open a console. My startup project is a nancyfx server running on IIS Express. — Toast
– Toast, Commented Apr 9, 2015 at 12:28
nancy can be selfhosted or iis hosted, there is nothing called nancyserver on IIS, :) if IIS MUST be running in order to get a result, then it's hosted on IIS. — Mohammed Swillam
– Mohammed Swillam, Commented Apr 9, 2015 at 12:32

rory.ap · Accepted Answer · 2015-04-09 12:19:59Z

2

"\config.json" will read from ROOT, try "config.json"

edited Apr 9, 2015 at 12:19

rory.ap

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answered Apr 9, 2015 at 12:19

Steve Drake

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7 Comments

Toast Over a year ago

This throws the same exception. (Updated question)

Steve Drake Over a year ago

so, the CLASS has the output file? you need to make sure its in the WORKING folder of the Application. Or if its ASP.NET which it looks like it is then the web root.

Steve Drake Over a year ago

it will not end up in C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\Temporary ASP.NET Files\\root\\2158bea8\\d46fc01c\\assembly\\dl3\\eca14761\\49a747bf_be72d001 (run time build) As its the BUILD of the WEB SITE that is putting the file in that folder.

Steve Drake Over a year ago

This covers what the TEMP ASP.NET files are stackoverflow.com/questions/450831/…

Toast Over a year ago

The linked answer says that this temp folder doesn't need any maintainance. How can I get VS to copy the files into that folder? @Steve Drake

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Tamim Al Manaseer · Accepted Answer · 2015-04-09 12:24:09Z

as Steve said, you need to use "config.json", this will read from where the exe or application resides.

So you need to tell VS to copy this file to your output directory when building, to this do the following:

Right click the file in VS > Properties > Set "Copy to output Directory" to "Copy Always"

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