"The expected lock file doesn't exist. Please run "dnu restore"" right after I have done so

c# json asp.net-core dnx entity-framework-core
Antrim picture Antrim · Sep 28, 2015 · Viewed 13.4k times · Source

I'm running beta7 for everything, including EF 7. I'm trying to connect to my remote existing database using the ASP.NET 5 Application template project. My project.json looks like this:

{
  "webroot": "wwwroot",
  "userSecretsId": "aspnet5-XXX-409e9e37-b7bb-4185-b7aa-6dc336087524",
  "version": "1.0.0-*",

  "dependencies": {
    "EntityFramework.Commands": "7.0.0-beta7",
    "EntityFramework.SqlServer": "7.0.0-beta7",
    "Microsoft.AspNet.Authentication.Cookies": "1.0.0-beta7",
    "Microsoft.AspNet.Authentication.Facebook": "1.0.0-beta7",
    "Microsoft.AspNet.Authentication.Google": "1.0.0-beta7",
    "Microsoft.AspNet.Authentication.MicrosoftAccount": "1.0.0-beta7",
    "Microsoft.AspNet.Authentication.Twitter": "1.0.0-beta7",
    "Microsoft.AspNet.Diagnostics": "1.0.0-beta7",
    "Microsoft.AspNet.Diagnostics.Entity": "7.0.0-beta7",
    "Microsoft.AspNet.Identity.EntityFramework": "3.0.0-beta7",
    "Microsoft.AspNet.Mvc": "6.0.0-beta7",
    "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-beta7",
    "Microsoft.AspNet.Server.IIS": "1.0.0-beta7",
    "Microsoft.AspNet.Server.WebListener": "1.0.0-beta7",
    "Microsoft.AspNet.StaticFiles": "1.0.0-beta7",
    "Microsoft.AspNet.Tooling.Razor": "1.0.0-beta7",
    "Microsoft.Framework.Configuration.Abstractions": "1.0.0-beta7",
    "Microsoft.Framework.Configuration.Json": "1.0.0-beta7",
    "Microsoft.Framework.Configuration.UserSecrets": "1.0.0-beta7",
    "Microsoft.Framework.Logging": "1.0.0-beta7",
    "Microsoft.Framework.Logging.Console": "1.0.0-beta7",
    "Microsoft.Framework.Logging.Debug" : "1.0.0-beta7",
    "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0-beta7"
  },

  "commands": {
    "web": "Microsoft.AspNet.Hosting --config hosting.ini",
    "ef": "EntityFramework.Commands"
  },

  "frameworks": {
    "dnx451": { },
    "dnxcore50": { }
  },

  "exclude": [
    "wwwroot",
    "node_modules",
    "bower_components"
  ],

  "publishExclude": [
    "node_modules",
    "bower_components",
    "**.xproj",
    "**.user",
    "**.vspscc"
  ],

  "scripts": {
   "prepublish": [ "npm install", "bower install", "gulp clean", "gulp min" ]
  }
}

Doing a search online it seemed that in order to accomplish what I wanted I needed to run the following command:

dnx ef dbcontext scaffold "ConnectionString" EntityFramework.SqlServer

Which I could not do because I had an issue which was solved as explained here: Using existing database with ASP.NET 5 and EF7 (beta 7)

Now I can finally get to run the command "dnx", but when I try running it with my connectionstring, which looks like this:

dnx ef dbcontext scaffold "Data Source=192.168.XX.XXX\devsql;Initial
Catalog=Development;Integrated Security=False;User ID=system;Password=XXX;"
EntityFramework.SqlServer

it gives me the following errors:

[ERROR] dnx : System.InvalidOperationException: Failed to resolve the
following dependencies for target framework 'DNXCore,Version=v5.0':
[ERROR] En línea: 1 Carácter: 1 [ERROR] + dnx ef dbcontext scaffold
"Data Source=192.168.XX.XXX\devsql;Initial Catalog=Dev ... [ERROR] +
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[ERROR]     + CategoryInfo          : NotSpecified:
(System.InvalidO...,Version=v5.0'::String) [], RemoteException [ERROR]
+ FullyQualifiedErrorId : NativeCommandError [ERROR]   [ERROR]    EntityFramework.Commands 7.0.0-beta7 [ERROR]   
EntityFramework.SqlServer 7.0.0-beta7 [ERROR]   
Microsoft.AspNet.Authentication.Cookies 1.0.0 [ERROR] -beta7 [ERROR]  
Microsoft.AspNet.Authentication.Facebook 1.0.0-beta7 [ERROR]   
Microsoft.AspNet.Authentication.Google 1.0.0-beta7 [ERROR]   
Microsoft.AspNet.Authentication.MicrosoftAccount 1.0.0-beta7 [ERROR]  
Microsoft.AspNet.Authentication.Twitter 1.0.0-beta7 [ERROR]   
Microsoft.AspNet.Diagnostics 1.0.0-beta7 [ERROR]   
Microsoft.AspNet.Diagnostics.Entity 7.0.0-beta7 [ERROR]   
Microsoft.AspNet.Identity.EntityFramework 3.0.0-beta7 [ERROR]   
Microsoft.AspNet.Mvc 6.0.0-beta7 [ERROR]   
Microsoft.AspNet.Mvc.TagHelpers 6.0.0-beta7 [ERROR]   
Microsoft.AspNet.Server.IIS 1.0.0-beta7 [ERROR]   
Microsoft.AspNet.Server.WebListener 1.0.0-beta7 [ERROR]   
Microsoft.AspNet.StaticFiles 1.0.0-beta7 [ERROR]   
Microsoft.AspNet.Tooling.Razor 1.0.0-beta7 [ERROR]   
Microsoft.Framework.Configuration.Abstractions 1.0.0-beta7 [ERROR]   
Microsoft.Framework.Configuration.Json 1.0.0-beta7 [ERROR]   
Microsoft.Framework.Configuration.UserSecrets 1.0.0-beta7 [ERROR]   
Microsoft.Framework.Logging 1.0.0-beta7 [ERROR]   
Microsoft.Framework.Logging.Console 1.0.0-beta7 [ERROR]   
Microsoft.Framework.Logging.Debug 1.0.0-beta7 [ERROR]   
Microsoft.VisualStudio.Web.BrowserLink.Loader 14.0.0-beta7 [ERROR] 
[ERROR]
C:\XXX\XXX\src\XXX\project.lock.json(1,0):
error: The expected lock file doesn't exist. Please run "dnu restore"
to generate a new lock file. [ERROR] Current runtime target framework:
'DNXCore,Version=v5.0 (dnxcore50)' [ERROR]  Version:     
1.0.0-beta7-15532 [ERROR]  Type:         CoreCLR [ERROR]  Architecture: x64 [ERROR]  OS Name:      Windows [ERROR]  OS Version: 
6.1 [ERROR]  [ERROR]    at Microsoft.Dnx.Runtime.DefaultHost.GetEntryPoint(String
applicationName) [ERROR]    at
Microsoft.Dnx.ApplicationHost.Program.ExecuteMain(DefaultHost host,
String applicationName, String[] args) [ERROR]    at
Microsoft.Dnx.ApplicationHost.Program.Main(String[] args) [ERROR] ---
End of stack trace from previous location where exception was thrown
--- [ERROR]    at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() [ERROR]
at Microsoft.Dnx.Runtime.Common.EntryPointExecutor.Execute(Assembly
assembly, String[] args, IServiceProvider serviceProvider) [ERROR]   
at Microsoft.Dnx.Host.Bootstrapper.RunAsync(List`1 args,
IRuntimeEnvironment env, FrameworkName targetFramework) [ERROR]    at
Microsoft.Dnx.Host.RuntimeBootstrapper.ExecuteAsync(String[] args,
FrameworkName targetFramework) [ERROR]    at
Microsoft.Dnx.Host.RuntimeBootstrapper.Execute(String[] args,
FrameworkName targetFramework) [ERROR]

Given the 

[ERROR]
C:\XXX\XXX\src\XXX\project.lock.json(1,0):
error: The expected lock file doesn't exist. Please run "dnu restore"
to generate a new lock file.

I have tried running

PS C:\XXX\XXX> dnu restore
Microsoft .NET Development Utility CoreCLR-x64-1.0.0-beta7-15532

CACHE https://api.nuget.org/v3/index.json Restoring packages for
C:\XXX\XXX\src\XXX\project.json   CACHE
https://api.nuget.org/v3-flatcontainer/system.threading.threadpool/index.json
GET
https://api.nuget.org/v3-flatcontainer/system.net.sockets/index.json  
OK
https://api.nuget.org/v3-flatcontainer/system.net.sockets/index.json
1117ms Writing lock file
C:\XXX\XXX\src\XXX\project.lock.json Restore
complete, 2071ms elapsed

NuGet Config files used:
    C:\Users\XXX\AppData\Roaming\NuGet\NuGet.Config
    C:\XXX\XXX\NuGet.Config

Feeds used:
    https://api.nuget.org/v3-flatcontainer/

Which recreates the project.lock.json successfully, it seems (timestamp also reflects this). However, when I try running my scaffold script again, it keeps showing the same error shown above including the "expected lock file doesn't exist" part.

Any idea what's going wrong?

Answer

Nhat Hong Ly picture Nhat Hong Ly · Oct 14, 2015

I faced the same problem, and fixed it by: - Right click on "References" - Select "Restore Packages"

Or Ctrl + Shilf + R

It will create/update the "project.lock.json" file, which includes a complete list of all of the NuGet packages the app is using. In my opinion, you shouldn't put it in the source control

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