asp.net core - Error while restoring Options.ConfigurationExtensions package -


i trying implement options pattern mentioned in link - https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration#options-example

for this, started adding below in project.json

"microsoft.extensions.options.configurationextensions": "1.0.0"

but getting error on restoring package- configurationextensions error

my complete project.json this-

{   "dependencies": {     "glimpse": "2.0.0-beta1",     "microsoft.aspnetcore.diagnostics": "1.0.0",     "microsoft.aspnetcore.identity": "1.0.0",     "microsoft.aspnetcore.mvc": "1.0.0",     "microsoft.aspnetcore.mvc.taghelpers": "1.0.0",     "microsoft.aspnetcore.mvc.webapicompatshim": "1.0.0",     "microsoft.aspnetcore.server.iisintegration": "1.0.0",     "microsoft.aspnetcore.server.kestrel": "1.0.0",     "microsoft.aspnetcore.staticfiles": "1.0.0",     "microsoft.extensions.configuration.commandline": "1.0.0",     "microsoft.extensions.configuration.fileextensions": "1.0.0",     "microsoft.extensions.configuration.json": "1.0.0",     "microsoft.extensions.configuration.usersecrets": "1.0.0",     "microsoft.extensions.logging": "1.0.0",     "microsoft.extensions.logging.console": "1.0.0",     "microsoft.extensions.logging.debug": "1.0.0",     "microsoft.extensions.options.configurationextensions": "1.0.0",     "microsoft.visualstudio.web.browserlink.loader": "14.0.0",     "microsoft.visualstudio.web.codegeneration.tools": {       "version": "1.0.0-preview2-final",       "type": "build"     },     "microsoft.visualstudio.web.codegenerators.mvc": {       "version": "1.0.0-preview2-final",       "type": "build"     },     "microsoft.entityframeworkcore.sqlserver": "1.0.0",     "microsoft.entityframeworkcore.sqlserver.design": {       "version": "1.0.0",       "type": "build"     },     "microsoft.entityframeworkcore.tools": {       "version": "1.0.0-preview2-final",       "type": "build"     }   },    "tools": {     "bundlerminifier.core": "2.0.238",     "microsoft.aspnetcore.razor.tools": "1.0.0-preview2-final",     "microsoft.aspnetcore.server.iisintegration.tools": "1.0.0-preview2-final",     "microsoft.entityframeworkcore.tools": "1.0.0-preview2-final",     "microsoft.extensions.secretmanager.tools": "1.0.0-preview2-final",     "microsoft.visualstudio.web.codegeneration.tools": {       "version": "1.0.0-preview2-final",       "imports": [         "portable-net45+win8"       ]     }   },    "frameworks": {     "net461": { }   },    "buildoptions": {     "emitentrypoint": true,     "preservecompilationcontext": true   },    "publishoptions": {     "include": [       "wwwroot",       "web.config",       "views",       "areas/**/views",       "appsettings.json"     ]   },    "scripts": {     "postpublish": [ "dotnet publish-iis --publish-folder %publish:outputpath% --framework %publish:fulltargetframework%" ]   } }

my environment - vs2015 update3, .net core sdk 1.0.0 , preview2 tooling

my project template - asp.net core application (.net framework 4.6.1)

can please guide me on this?

if create new project, can see configurationextensions default

"microsoft.extensions.options.configurationextensions": "1.0.0"

but when add in existing project created during rc1, gives me error message-

error nu1001 dependency microsoft.extensions.options.configurationextensions >= 1.0.0 not resolved.

please me on this.

i trying restore packages vs2015 doing right click on references > restore packages

but somehow, vs2015 not restoring particular package.

then tried dotnet restore command , worked successfully.

adding self answer may in future.


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