c# - Add-Migration fails because EntityFrameworkCore.Tools is not installed -

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i want create console application ef core following tutorial: http://ef.readthedocs.io/en/latest/platforms/full-dotnet/new-db.html.

my problem is, cannot execute statement

add-migration

as described in tutorials. shows me:

pm> add-migration myfirstmigration cannot execute command because 'microsoft.entityframeworkcore.tools' not installed in project 'src\appef'. add 'microsoft.entityframeworkcore.tools' 'tools' section in project.json. see http://go.microsoft.com/fwlink/?linkid=798221 more details.

all added assemblies:

enter image description here

what wrong?

update

the statement dotnet restore works , dotnet-ef --help not work @ all.
enter image description here

and can see, statement execute in project folder.

as few people mentioned in comments, microsoft.entityframeworkcore.tools needs added tools section of project.json.

i've tested project.json latest (july 2016) versions of ef core , tooling packages, , works:

{     "buildoptions": {     "emitentrypoint": true   },   "dependencies": {     "microsoft.entityframeworkcore.sqlserver": "1.0.0",     "microsoft.entityframeworkcore.design": {       "version": "1.0.0-preview2-final",       "type": "build"     },     "microsoft.netcore.app": {       "type": "platform",       "version": "1.0.0"     }   },   "frameworks": {     "netcoreapp1.0": {}   },   "tools": {     "microsoft.entityframeworkcore.tools": "1.0.0-preview2-final"   },   "version": "1.0.0-*" }

to use it, execute these commands inside project folder:

λ dotnet restore log  : restore completed in 2810ms.  λ dotnet ef --help compiling efcoretester2 .netcoreapp,version=v1.0                                                                             compilation succeeded.                                                                                                               0 warning(s)                                                                                                                     0 error(s)                                                                                                                   time elapsed 00:00:01.7208394                                                                                                     entity framework .net core cli commands 1.0.0-preview2-21431 usage: dotnet ef [options] [command] options:   -h|--help                      show information   -v|--verbose                   enable verbose output   --version                      show version information (... etc)

at first, getting no executable found matching command "dotnet-ef" until realized have execute commands inside project folder (src\projectname in case). if try solution root directory, won't work.


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