ASP.NET 5 not running in development mode

Question

I have updated my ASP.NET 5 project to beta 8, and we are now supposed to the following web command

"commands": {
    "web": "Microsoft.AspNet.Server.Kestrel"
},

Now i have updated my project with the environment variables.

This has also updated my launchSettings.json file, as so

{
  "profiles": {
    "web": {
      "commandName": "web",
      "environmentVariables": {
        "ASPNET_ENV": "Development"
      }
    }
  }
}

But for some reason, every time I run the command dnx web it says that the hosting environment is Production. Why is it not starting in development mode?

Victor Hurdugaci · Accepted Answer · 2015-10-27 17:36:11Z

13

The settings in launchSettings.json are only used by VS. If you run from a console, you have to set that environment variable manually.

CMD:

set ASPNET_ENV=Development
dnx web

PS:

$env:ASPNET_ENV=Development
dnx web

answered Oct 27, 2015 at 17:36

Victor Hurdugaci

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3 Comments

Juergen Gutsch Over a year ago

this is also working: dnx web ASPNET_ENV=Development

Gillardo Over a year ago

set ASPNET_ENV=Development does not work. dnx web ASPNET_DEV=Development does work though.

Suhumar Over a year ago

How to set this environment variable during the build process? I am guessing it will need to be updated to "staging" and "production" as and when it is deployed to these environments

superjos · Accepted Answer · 2016-05-02 18:58:49Z

1

Adding to @Victor Hurdugaci answer, you could also avoid "messing" with current environment by passing needed variables on command line.

Inside project.json file, say that you have a web-dev command specific for development environment:

"commands": {
  "web-dev": "Microsoft.AspNet.Server.Kestrel 
    --ASPNET_ENV Development --Hosting:Environment Development 
    --config hosting.Development.json",
},

where you can see how both ASPNET_ENV, Hosting:Environment are set, as well as invoking a specific hosting.json configuration.
NOTE: command is split on several lines just for readability, join again before actually pasting in JSON file.

answered May 2, 2016 at 18:58

superjos

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Comments

Mwiza · Accepted Answer · 2017-05-10 11:11:26Z

0

The command: set ASPNET_ENV=Development is now obsolete instead you can use CMD:

set ASPNETCORE_ENVIRONMENT=Development

edited May 10, 2017 at 11:11

answered May 10, 2017 at 10:51

Mwiza

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